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DTSTART;TZID=America/New_York:20250124T110000
DTEND;TZID=America/New_York:20250124T120000
DTSTAMP:20250117T184149Z
CREATED:20241213T001300Z
LAST-MODIFIED:20250117T184149Z
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SUMMARY:Photonics Initiative Seminar: Mikhail Belkin
DESCRIPTION:Dr. Mikhail Belkin\, Technical University of Munich (TUM) \nNew Applications for Nonlinear Intersubband Polaritonic Metasurfaces: from beam shaping to THz generation  \nAbstract – Quantum-engineered intersubband transitions in n-doped multiple-quantum-well heterostructures allow one to produce semiconductor films with very large nonlinear optical response. This nonlinear response can be further enhanced by processing semiconductor heterostructures as metasurfaces in which intersubband transitions are coupled to optical modes of the metasurface nanoresonators [1]. As a result\, one can fabricate optically-thin films of nonlinear optical materials that display second- and third-order nonlinear susceptibility values 4-7 orders of magnitude higher than that of traditional nonlinear optical crystals. Using these films\, one can achieve efficient (0.1-1%) frequency mixing at moderate pumping intensities (10-100 kW/cm) without phase-matching constraints associated with bulk nonlinear optical crystals [2\,3]. In this presentation\, I will discuss our recent advancements with these metasurfaces\, focusing on dynamic electrical phase control of the nonlinear optical response at the individual nanoresonator level [4\,5] and on efficient broadly-tunable continuous-wave terahertz generation via difference-frequency mixing [6]. \n[1] J. Lee et al.\, “Giant nonlinear response from plasmonic metasurfaces coupled to intersubband transitions\,” Nature 511\, 65–69 (2014).\n[2] J. Lee et al.\, “Ultrathin second-harmonic metasurfaces with record-high nonlinear optical response\,” Adv. Opt. Mat. 4\, 664-670 (2016).\n[3] D. Kim et al.\, “Efficient second-harmonic generation from dielectric inter-subband polaritonic metasurfaces coupled to lattice resonance\,” Nano Lett. 23\, 9003-9010 (2023).\n[4] J. Yu et al.\, “Electrically tunable nonlinear polaritonic metasurface\,” Nat. Photon. 16\, 72-78 (2022).\n[5] J. Yu et al.\, “Complex amplitude control of second harmonic generation using electrically tunable nonlinear polaritonic metasurfaces\,” under review (2025).\n[6] J. Krakofsky et al.\, “Broadband continuous-wave terahertz generation with intersubband polaritonic metasurfaces\,” in preparation (2025). \nBio: Dr. Mikhail A. Belkin is a professor in the Department of Electrical Engineering of the Technical University of Munich and the head of the Chair for Semiconductor Technology at the Walter Schottky Institute of the Technical University of Munich. Previously\, he was a professor in the Department of Electrical and Computer Engineering at The University of Texas at Austin. His research interests are in the field of mid-infrared and THz optoelectronics\, integrated photonics\, nonlinear optics\, and metamaterials. \nDr. Belkin received his Ph.D. degrees in Physics at the University of California at Berkeley in the group of Prof. Yuen-Ron Shen in 2004 and did his postdoctoral work at the group of Prof. Federico Capasso at Harvard University in 2004-2008. His recognitions include Friedrich Wilhelm Bessel Research Award from the Alexander von Humboldt Foundation (2016)\, NSF CAREER Award (2012)\, DARPA Young Faculty Award (2012)\, and AFOSR Young Investigator Program Award (2009). Dr. Belkin is a Fellow of the OSA and SPIE. \nThis is an in-person seminar. If you opt to join via zoom use meeting ID 885 8546 6074 Passcode 710635
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-mikhail-belkin/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250226T090000
DTEND;TZID=America/New_York:20250226T170000
DTSTAMP:20250206T141933Z
CREATED:20250122T194144Z
LAST-MODIFIED:20250206T141933Z
UID:10001466-1740560400-1740589200@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Event: IEEE Distinguished Lecturers workshop
DESCRIPTION:IEEE Distinguished Lecturers workshop\nIf you plan to attend please register here: https://events.vtools.ieee.org/m/467009  \nAgenda \n9:00 A.M. Welcome Remarks\nArno Thielens & Andrea Alu (CUNY ASRC)\, Levent Sevgi (IEEE AP-S) \n9:15 A.M. Novel EM Modeling\, UQ\, and Design Methodologies and Applications in Communications\, Medical Imaging and Diagnostics\, and Radar Meteorology\nBranislav Notaros (Colorado State University) \n10:00 A.M. Coffee Break \n10:30 A.M. Single-mode Dual-band Patch Antenna Using Lorentz-Type Dispersive Metamaterials\nZhi Ning Chen (National University Singapore) \n11:25 A.M ASRC Photonics Lab Tours\nArno Thielens & Andrea Alu (CUNY\, ASRC) \n12:15 P.M. Lunch \n1:15 P.M. Metasurface Antennas: port diplexing\, mechanic scanning and electronic reconfigurability\nStefano Maci (University of Siena) \n2:00 P.M. A ray-tracing technique for the analysis of lens antennas\nOscar Quevedo-Teruel (KTH) \n2:45 P.M. Coffee Break \n3:15 P.M. Spectro Temporal Dispersion Engineered Electromagnetic Metamaterials for Sensing and Communications\nChung-Tse Michael Wu (National Taiwan University) \n4:00 P.M. Diving into the Subsurface: Unveiling Hidden Worlds through Ground-Penetrating Radar\nHaihan Sun (University of Wisconsin-Madison) \n 4:45 P.M. Closing Remarks\nArno Thielens & Andrea Alu (CUNY ASRC)\, Levent Sevgi (IEEE AP-S) \n5:00 P.M. Close \n  \nSPONSORED BY: \nIEEE Antenna & Propagation Society\nIEEE Microwave Theory & Technology Society\nIEEE A&P Young Scientist Ambassadors\nIEEE NY Section\nIEEE MGA
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-event-ieee-workshop-lectures/
LOCATION:ASRC Auditorium & Cafe\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250314T110000
DTEND;TZID=America/New_York:20250314T120000
DTSTAMP:20250205T161347Z
CREATED:20241104T203839Z
LAST-MODIFIED:20250205T161347Z
UID:10001306-1741950000-1741953600@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Giuseppe Strangi
DESCRIPTION:Dr. Giuseppe Strangi (Case Western Reserve University) \nThin-Film Photonics: Enabling Fano Resonances and Optomechanics\nAbstract – In recent years\, significant interest has emerged in the inverse design1 of artificial layered heterostructures for photonic applications2. Specifically\, the unique optical properties of near-zero permittivity (ENZ) metamaterials have enabled the exploration of novel physical effects and mechanisms. In this presentation\, I will delve into how thin film photonics harnesses the potential of Fano resonances3-4 and extreme optomechanics5. By layering metal-dielectric thin films\, we can create a distinct type of optical coating that exhibits photonic Fano resonance\, referred to as a Fano-resonant optical coating (FROC). We extend the concept of coupled mechanical oscillators to thin-film nanocavities\, shedding light on semi-transparent FROCs that can both transmit and reflect the same color\, akin to a beam splitter filter. This remarkable property is beyond the capabilities of conventional optical coatings. In the latter part of my presentation\, I will discuss recent theoretical and experimental efforts aimed at exploring optomechanics based on epsilon-near-zero materials5. \n \n[1] Lininger\, A.\, Hinczewski\, M.\, & Strangi\, G. “General Inverse Design of Layered Thin-Film Materials with Convolutional Neural Networks”. ACS PHOTONICS\, 8(12)\, 3641-3650 (2021)\n[2] K. V. Sreekanth\, Y. Alapan\, M. ElKabbash\, U. A. Gurkan\, E. Ilker\, M. Hinczevski\, A. De Luca and G. Strangi NATURE MATERIALS 15\, 4 4609 (2016)\n[3] ElKabbash\, M.; Letsou\, T.; Jalil\, S. A; Hoffman; Lininger\, A. R; Fann\, C.; Hinczewski\, M.; Strangi\, G. and Chunlei\, G.; “Fano-resonant ultrathin film optical coatings” NATURE NANOTECHNOLOGY\, 16\, 4\, 440-446 (2021)\n[4] ElKabbash\, Mohamed; Hoffman\, Nathaniel; Lininger\, Andrew R; Jalil\, Sohail A; Letsou\, Theodore; Hinczewski\, Michael; Strangi\, Giuseppe; Guo\, Chunlei; “Fano resonant optical coatings platform for full gamut and high purity structural colors” NATURE COMMUNICATIONS\, 14\, 1 3960 (2023).\n[5] Kiasat\, Y.\, Donato\, M.G.\, Hinczewski\, M. Elkabbash\, M.\, Letsou\, T.\, Sajia R.\, Marago’ O.M.\, Strangi\, G.\, & Engheta\, N. Epsilon-near-zero (ENZ)-based optomechanics. COMMUNICATION PHYSICS 6\, 69 (2023) \nBio – Dr. Giuseppe Strangi is Professor of Physics at Case Western Reserve University and holds an Endowed Chair position as Ohio Research Scholar on Surfaces in Advanced Materials. He is affiliated with IAM – Institute for Advanced Materials at CWRU and with CNR – National Research Council\, Italy.\nhttps://nanoplasmlab.com/ \nThis is an in-person seminar. If you opt to join via zoom use meeting ID 860 8907 5271 Passcode 046161
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-giuseppe-strangi/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250327T133000
DTEND;TZID=America/New_York:20250327T150000
DTSTAMP:20250321T221017Z
CREATED:20250321T221017Z
LAST-MODIFIED:20250321T221017Z
UID:10001481-1743082200-1743087600@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Jacob Khurgin
DESCRIPTION:Dr. Jacob Khurgin (Johns Hopkins University) \nCoherent Frequency Combs in Mid-Infrared and THz Produced By Self Frequency Modulated Quantum Cascade Lasers\nFor many applications Optical Frequency Combs (OFCs) require a high degree of temporal coherence and thus narrow linewidth1 as well as wide bandwidth (i.e. many spectral lines.  Commonly OFCs are generated in some nonlinear media from a monochromatic narrow linewidth laser sources or from a mode-locked laser pulses but in the all-important mid-infrared (MIR) and terahertz (THz) regions of spectrum OFCs can be generated intrinsically (i.e. without any intracavity mode-lockers) by the free-running quantum cascade lasers (QCLs) with high efficiency These combs do not look anything like conventional OFCs as the phases of each mode are different and in temporal domain the OFC is a combination of amplitude- and phase-modulated signals rather than a short pulse. Despite this fact the experimental evidence suggests that the linewidth of the QCL OFC is just as narrow as that of a QCL operating in the single mode. While universally acknowledged\, this observation is not fully understood.  In this work we rigorously prove the narrowness of the QCL OFC linewidth by deriving the expression for the Schawlow-Townes linewidth and obtain an analytical expression for the maximum potential bandwidth of the frequency modulated comb naturally occurring in free running QCL’s. The bandwidth is shown to critically depend on the flatness of the gain spectrum and the cavity length and less so on pump current. The results firmly establish that the performance of QCL frequency combs can be on par with combs generated by other means. \nExpanding Dynamic Range (Linearizing) of Electro Optic Modulators by All Optical Means\nAnalog photonic systems are crucial for expanding RF photonics applications and higher-order coherent digital systems. The increasing demand for high-performance RF photonic links in 5G and other applications necessitates highly linear transmitters. A key challenge is the inherent nonlinearity of Mach-Zehnder modulators (MZMs)\, which limits the spurious-free dynamic range (SFDR). Numerous MZM linearization techniques have been explored\, including electrical\, optical\, and mixed methods. Electrical linearization suffers from bandwidth limitations and high power consumption. Mixed methods\, often employing multiple modulators\, require precise control of numerous voltages and may not compensate for second harmonic distortion. In this talk I highlight the work on development of integrated rugged all-optical linear modulators using three different linearization schemes: (1) Ring Assistant MZI (RAMZI)\, (2) Grating Assisted MZI (GAMI) and (3) Combined Dual Output MZI. The modulators have been realized using Si\, III-V and LiNbO3 platforms and have show record high FDR results. \nBio –  Jacob B. Khurgin\, a professor of electrical and computer engineering\, is known for his diverse and eclectic research in the areas of optics\, electronics\, condensed matter physics\, and telecommunications. Khurgin earned his BS and MS in Optics from the Institute of Fine Mechanics and Optics in St. Petersburg\, Russia in 1977 and 1979\, respectively. He immigrated to the United States in 1980 and spent eight years working as a researcher at Philips Laboratories in New York. He earned a PhD in Electro-Physics from New York University in 1987 and joined Johns Hopkins in 1988. \nThis is an in-person seminar. If you opt to join via zoom use meeting ID 817 6524 8204 Passcode 014783
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-jacob-khurgin/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250328T110000
DTEND;TZID=America/New_York:20250328T120000
DTSTAMP:20250205T160849Z
CREATED:20250128T151851Z
LAST-MODIFIED:20250205T160849Z
UID:10001470-1743159600-1743163200@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Marc Serra Garcia
DESCRIPTION:Dr. Marc Serra Garcia (AMOLF) \nPhysical computing in metamaterials\nAbstract – There is a significant range of physical phenomena—from nonlinear elasticity\, to symmetry\, noise\, topology\, and disorder — that are rarely utilized in traditional computing paradigms. Yet these phenomena can unlock new efficiencies\, by directly processing signals in their natural domain\, and by bypassing the traditional abstraction stack associated with digital CMOS technology. However\, building physical computers is challenging. Information processing tasks generally involve complex input-output relations\, thus requiring designs that are highly expressive; and for these designs\, the relation between function and structure is nontrivial\, complicating the simulation\, design\, and fabrication of devices. In my talk\, I will illustrate our journey towards using metamaterials for physical computing\, with two recent examples. First\, I will talk about our results in passive speech recognition\, where we leverage a phononic metamaterial to implement wake-up-word detection with zero standby power consumption. Second\, I will discuss our ongoing work in self-learning materials\, that autonomously adapt to improve their performance—driven by their ability to form long-term memories in response to examples and external feedback. \nBio – Dr. Marc Serra-Garcia is a Caltech (MS 2013) and ETH Zurich (Ph.D. 2017) trained aerospace engineer researching materials with improved mechanical properties. He was the technical co-founder of the startup TapTools\, focusing on the development of cost and time-efficient material testing devices for manufacturing\, aerospace and construction industries. \nThis is an in-person seminar. If you opt to join via zoom use meeting ID 847 6467 4868 Passcode 355860
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-marc-serra-garcia/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250331T110000
DTEND;TZID=America/New_York:20250331T120000
DTSTAMP:20250327T130827Z
CREATED:20250326T154820Z
LAST-MODIFIED:20250327T130827Z
UID:10001486-1743418800-1743422400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Armando Genco
DESCRIPTION:Armando Genco (Politecnico di Milano) \nUltrafast dynamics of coherent exciton-polaritons in van der Waals semiconductor metasurfaces\nAbstract – Metasurfaces based on transition metal dichalcogenides (TMDs) have emerged as a promising platform for controlling light at the nanoscale due to their exceptional optical properties\, including strong excitonic responses and intrinsically high refractive index. Unlike traditional dielectric metasurfaces\, TMD-based platforms enable highly confined optical modes with minimal losses\, making them ideal for applications in nanophotonics. The high refractive index of TMDs plays a crucial role in supporting Mie-type resonances and facilitating the realization of bound states in the continuum (BICs)\, which exhibit theoretically infinite quality factors and extreme field localization. The interplay between BICs and TMD metasurfaces opens new avenues for enhancing light-matter interactions\, paving the way for efficient nonlinear optics\, lasing\, and quantum photonic devices. \nIn my talk\, I will discuss highly tunable optical metasurfaces composed of nanorod-type unit cells made of bulk WS2\, where excitons are strongly coupled to quasi-BIC modes forming polariton states at room temperature. I will first focus on the often-overlooked polarization-dependent angular dispersion of the resonant modes\, which we characterized across the entire momentum space using hyperspectral imaging. The photonic band structure plays a crucial role in shaping the nonlinear behavior and ultrafast dynamics of polaritons\, which we investigated through various pump-probe spectroscopy techniques. Leveraging high temporal resolution\, we tracked the coherence of strong light–matter coupling\, revealing pronounced oscillations in the pump-probe traces\, signature of polariton quantum beats.” \nBio – Dr. Armando Genco is an Assistant Professor at Politecnico di Milano (Italy) and an expert in optics and photonics. His research primarily explores light-matter interactions between excitons in quantum materials and photons confined in optical micro- and nanoresonators\, both in static and transient conditions. \nThis is an in-person seminar.  If you opt to join via zoom use meeting ID 880 6343 0208  Passcode 553685
URL:https://asrc.gc.cuny.edu/event/37649/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250407T110000
DTEND;TZID=America/New_York:20250407T120000
DTSTAMP:20250317T185500Z
CREATED:20250113T153512Z
LAST-MODIFIED:20250317T185500Z
UID:10001465-1744023600-1744027200@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Arthur D. Yaghjian
DESCRIPTION:Dr. Arthur D. Yaghjian (Electromagnetics Research) \nRobust Field-Based Antenna Quality Factor\nAbstract – New field-based quality factors Q(ω) are derived for antennas with known fields produced by an input current. These Q(ω) are remarkably robust because they equal the input-impedance bandwidth quality factor QZ(ω) when the input impedance is available. Like QZ(ω)\, the field-based Q(ω) is independent of the choice of origin of the antenna fields and is impervious to extra lengths of transmission lines and surplus reactances. These robust field-based quality factors are used to derive new lower bounds on the quality factors (upper bounds on the bandwidths) of spherical-mode antennas that improve upon the previous Chu/(Collin-Rothschild) lower bounds for spherical modes. \nBio –  Dr. Arthur D. Yaghjian received the B.S.\, M.S.\, and Ph.D. degrees in electrical engineering from Brown University in 1964\, 1966\, and 1969\, and an Honorary Doctorate from the Technical University of Denmark in 2020. After teaching for a year\, he joined the research staff of the National Institute of Standards and Technology (NIST)\, Boulder\, CO in 1971 and transferred in 1983 to the Air Force Research Laboratories\, Bedford\, MA until 1996 when he became an independent researcher. His early research at NIST helped pioneer the development of probe-corrected near-field antenna measurements for accurately characterizing modern antennas in both the frequency and time domains. More recently\, he has extended the spherical-wave near-field antenna theory to the rigorous analysis of the partially coherent fields radiated by the sun and other stars. His research in electromagnetic theory has led to the fundamental determination of electromagnetic fields in spatially dispersive as well as temporally dispersive natural materials and metamaterials. He has derived the definitive microscopic and macroscopic force and energy expressions for both diamagnetic and paramagnetic media. He has contributed significantly to the determination and fundamental understanding of the classical equations of motion of accelerated charged particles. In the area of high-frequency diffraction\, he and Robert Shore obtained convenient robust expressions for incremental length diffraction coefficients that are currently used to predict bistatic scattering and reflector antenna performance in commercial high-frequency computer codes. His work with Steven Best on the fundamental characterization of antennas\, including the determination of the upper bounds on the bandwidth of complex antennas\, has had a major impact on the research and development of modern electrically small antennas. He holds the patent on supergain electrically small antennas. He is an IEEE Life Fellow and has been an IEEE-APS Distinguished Lecturer. He has received the IEEE Electromagnetics award\, the IEEE-APS Distinguished Achievement award\, four IEEE Schelkunoff prize paper awards\, and has written two well-referenced books\, one co-authored with Thorkild Hansen. \nThis is an in-person seminar.  If you opt to join via zoom use meeting ID 595 955 6744 Passcode 842444
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-arthur-d-yaghjian/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250425T110000
DTEND;TZID=America/New_York:20250425T120000
DTSTAMP:20250312T140122Z
CREATED:20250312T140122Z
LAST-MODIFIED:20250312T140122Z
UID:10001480-1745578800-1745582400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Weidong Zhou
DESCRIPTION:Dr. Weidong Zhou\, Photonics Center\, University of Texas at Arlington (UTA) \nScaling towards high-power single-mode PCSELs and PCSEL Arrays\n(Photonic Crystal Surface-Emitting Lasers)  \nAbstract \nWhen it was first invented 60 years ago\, the laser was described as “A solution looking for a problem”. Few predicted that lasers would ultimately support multi-trillion-dollar photonics-enabled markets today. Based on the Fano resonances in photonic crystal cavities and transfer printing heterogeneous integration platform\, we have been working on next-generation semiconductor photonic crystal lasers and related heterogeneously integrated nanophotonic and optoelectronic devices for chip-scale integrated system applications. In this talk\, I will first describe how hybrid and monolithic photonic crystal lasers can address the grand challenges of energy-efficient on-chip lasers\, followed by presentations on scaling challenges in photonic crystal surface-emitting lasers (PCSELs) with high-power\, high brightness\, and high speed. In the second part\, I will discuss heterogeneously integrated photonic crystal optoelectronic devices based on the micro transfer printing process\, including high-speed photonic crystal spatial light modulators and monolayer graphene total absorption in critically coupled photonic crystal cavities and designs toward high speed reconfigurable intelligent surfaces. \nWeidong Zhou is a Distinguished University Professor and Janet and Mike Greene Professor at the University of Texas at Arlington (UTA). He obtained BS and ME degrees from Tsinghua University\, China\, and a Ph.D. degree from University of Michigan\, Ann Arbor. After graduation\, he spent three years at CIENA Corporation working on optical transceiver modules and subsystems for optical communication systems. Prof. Zhou and his group have made significant contributions to semiconductor heterogeneously integrated photonic crystal membrane photonics\, especially photonic crystal lasers\, modulators\, and sensors\, for integrated silicon photonics and flexible optoelectronics. He has published over 400 journal papers and conference presentations\, including many papers published in high-impact journals such as Nature Photonics\, Nature Communications\, Nature Biomedical Engineering\, etc. He has also delivered over 100 invited conference talks. Dr. Zhou is a fellow of SPIE\, a fellow of Optica\, a senior member of IEEE\, and a member of APS and AAAS. He is the Director of UTA Photonics Center. \nThis is an in-person seminar. If you opt to join via zoom use Meeting ID 851 2782 3775\, Passcode 563639
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-weidong-zhou/
LOCATION:ASRC 5th Floor Data Visualization Room\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250429T110000
DTEND;TZID=America/New_York:20250429T120000
DTSTAMP:20250430T151339Z
CREATED:20250421T152627Z
LAST-MODIFIED:20250430T151339Z
UID:10001491-1745924400-1745928000@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Danial Motlagh
DESCRIPTION:Dr. Danial Motlagh\,  Xanadu \nTitle: A Renaissance in Materials Discovery \nAbstract – Quantum computers have the potential to transform materials discovery for next-generation technologies from a slow and expensive trial and error process into a fast\, cost-effective\, simulation-driven endeavour. In this talk\, I’ll share our vision for a quantum-accelerated materials discovery pipeline and the regimes we believe quantum computers can have the greatest impact in solving real-world problems. I’ll walk through our recent progress toward that goal by introducing our newly developed suite of quantum algorithms for studying functional properties of photoactive materials and our efforts in connecting them to real-world energy applications. \nBio – Danial Motlagh entered the field of quantum computing during his computer science studies at the University of Toronto. Ever since\, he’s been dabbling in all things quantum\, utilizing his expertise in algorithms to develop novel and more efficient quantum algorithms. \nDanial Motlagh started at Xanadu (www.xanadu.ai) two year ago as an intern and now he is the Lead Quantum Algorithm Scientist. \nThis is an in-person seminar. If you opt to join via zoom use Meeting ID 856 1085 4811\, Passcode 739177
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-danial-motlagh/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250509T100000
DTEND;TZID=America/New_York:20250509T170000
DTSTAMP:20250410T165916Z
CREATED:20250410T165916Z
LAST-MODIFIED:20250410T165916Z
UID:10001489-1746784800-1746810000@asrc.gc.cuny.edu
SUMMARY:CUNYSciCom's 2025 Symposium
DESCRIPTION:A panel of judges (a science professor\, a trained public liaison\, and an undergraduate student) will give feedback to all participants\, and cash prizes of up to $500 will be awarded! Sponsored by the Doctoral and Graduate Student Council\, the GC Biology Department\, and external donor funding. \nHosted By \n\nBiology\nDoctoral and Graduate Students’ Council\nAdjunct Project\n\nAdmission Price \nFree \nRegister \nRegister to attend in-person or virtually here (Non-CUNY attendees will need a photo ID). \nWrap up the academic year with CUNYSciCom’s annual Communicating Your Science Symposium where students can win prizes for the best science presentations. The annual symposium challenges student scientists to present and explain their research to two different audiences—their peers and the general public—in short\, contained presentations that include contextual descriptions of the work\, visual aids\, and an audience Q&A. \nEmail us with any questions! cunyscicom@gmail.com \nLocation \nThis event is taking place in-person at the Advanced Science Research Center’s Main Auditorium (85 St. Nicholas Terrace New York\, NY 10031). \nFeatured Student Presenters \nTBA \nKeynote Speaker \nBen Taylor\, Nerd Nite \nFull Schedule \n9:30 a.m. – Registration + coffee\n10:00 a.m. – Welcome/Overview Talk\n10:10 a.m. – Presentation Block 1\n11:30 a.m. – Keynote Speaker; Mini activity; Intro to lunch thought activity\n12:15 p.m. –  Lunch\n1:10 p.m. – Presentation Block 2\n2:30 p.m. – Dismiss judges to discuss awards\n2:35 p.m. – Discuss lunchtime thought activity\n2:45 p.m. –  Announce Awards\n3:00 p.m. – Social Hour (until 5:00 p.m.)
URL:https://asrc.gc.cuny.edu/event/cunyscicoms-2025-symposium/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Environmental Sciences,Nanoscience,Neuroscience,Photonics,Structural Biology
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DTSTART;TZID=America/New_York:20250515T110000
DTEND;TZID=America/New_York:20250515T120000
DTSTAMP:20250507T011338Z
CREATED:20250507T011159Z
LAST-MODIFIED:20250507T011338Z
UID:10001492-1747306800-1747310400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Andrea Fiore
DESCRIPTION:Dr. Andrea Fiore\, Eindhoven University of Technology. \nNanophotonics on the Tip of a Fiber\nAbstract – By transferring nanopatterned semiconductor membranes on the tip of optical fibers\, we combine the power of nanophotonics with the flexibility of fiber sensing. In this talk I will discuss a variety of fiber-tip sensors of physical and biochemical parameters based on this Membrane-on-Fiber technology. \nBio – Andrea Fiore holds a PhD degree in Optics from the University of Orsay\, and has previously worked in Thales Research and Technology (Orsay\, France)\, at the University of California at Santa Barbara\, at the Italian National Research Council (Rome\, Italy)\, and at the Ecole Polytechnique Fédérale de Lausanne (Switzerland).  Prof. Fiore has been the recipient of the ‘Professeur boursier’ (Switzerland) and ‘Vici’ (The Netherlands) personal grants\, and has been awarded the 2006 ISCS ‘Young Scientist’ Award (International Symposium on Compound Semiconductors). He has acted as principal investigator in several national projects\, team leader in many EU projects\, coordinator of EU-FP6 project ‘SINPHONIA’ and of the Dutch national program ‘Nanoscale Quantum Optics’. He has led a 20 M€ NWO Gravitation program on Integrated Nanophotonics and he has co-founded the Eindhoven Hendrik Casimir Institute. He has coauthored over 180 journal articles and given around 60 invited talks at international conferences. He also co-founded three spin-offs\, nanoPHAB\, MantiSpectra and Firefly Sensing\, which commercialize nanophotonic technologies developed in his group. \nThis is an in-person seminar. If you opt to join via zoom use Meeting ID 883 7886 8895\, Passcode 345888
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-andrea-fiore/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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DTSTART;TZID=America/New_York:20250529T110000
DTEND;TZID=America/New_York:20250529T120000
DTSTAMP:20250505T163514Z
CREATED:20250421T112917Z
LAST-MODIFIED:20250505T163514Z
UID:10001490-1748516400-1748520000@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Angel Rubio
DESCRIPTION:Dr. Angel Rubio\, Max Planck Institute \n\nCavity Quantum Electrodynamics for Quantum Materials Design\n\n\n \nAngel Rubio\n\nMax Planck Institute for the Structure and Dynamics of Matter\, Luruper Chaussee 149\, 22761 Hamburg\, Germany\nInitiative for Computational catalysis (ICC) and Center for Computational Quantum Physics (CCQ) Flatiron Institute\,  10010 NY\, USA\n\n\n\n\nAbstract – A central challenge in computational physics is the accurate modeling and control of quantum materials under the influence of light. Traditional approaches such as Time-Dependent Density Functional Theory (TDDFT) have enabled progress in simulating light-driven phenomena\, but new frameworks are required to capture the effects of quantized electromagnetic fields on matter at equilibrium. In this context\, Cavity Materials Engineering has emerged as a powerful paradigm\, enabling ground-state modifications of materials by embedding them in optical cavities and leveraging vacuum fluctuations\, rather than external driving or photon excitation. This “dark” regime departs from conventional polaritonic physics by targeting the material ground state directly. When coupled to intrinsic nonlinearities—such as anharmonic phonon modes or metastable phases—vacuum fluctuations can induce macroscopic changes in material properties\, including superconductivity\, magnetism\, and structural transitions. The mechanism is conceptually similar to boson-mediated interactions in condensed matter\, yet uniquely exploits the electromagnetic vacuum as the mediating field. To model these phenomena\, we present the conceptual foundations of Quantum Electrodynamical Density Functional Theory (QEDFT)—a first-principles framework that seamlessly incorporates light-matter interactions into electronic structure theory. We will introduce its key theoretical principles and highlight recent applications demonstrating how cavity quantum electrodynamics can be used to predict and control emergent phases of quantum matter. This approach opens new frontiers in material design at the intersection of quantum optics and many-body physics. \n\n\nSome relevant  recent references\n\nEngineering quantum materials with chiral optical cavities \, H. Hübener\, U. D. Giovannini\, C. Schäfer\, J. Andberger\, M. Ruggenthaler\, J. Faist\, and A. Rubio Nature materials 20\, 438-442 (2021)\nQuantum materials engineering by structured cavity vacuum fluctuations}\\H. Hübener\, E. Vi\~nas Bostr\”om\, M. Claassen\, S. Latini\, A. Rubio Mater. Quantum. Technol. {\bf 4} 023002 (2024) (link https://iopscience.iop.org/article/10.1088/2633-4356/ad4e8b/pdf)\nCavity engineered phonon-mediated superconductivity in MgB2 from first principles quantum electrodynamics\, I-T. Lu\, Dongbin Shin\, Mark Kamper Svendsen\, Hannes Hübener\, Umberto De Giovannini\, Simone Latini\, Michael Ruggenthaler\, Angel Rubio\, Proceedings of the National Academy of Science USA (PNAS) 121\, e2415061121 (2024) \nControlling the magnetic state of the proximate quantum spin liquid α-RuCl3 with an optical cavity\,  Emil Vinas Boström\, Adithya Sriram\, Martin Claassen\, Angel Rubio\, npj Computational Materials 9\, 202 (2023)\nThe ferroelectric photo ground state of SrTiO3: Cavity materials engineering\, S. Latini\, D. Shin\, S. A. Sato\, C. Schäfer\, U. D. Giovannini\, H. Hübener\, and A. Rubio PNAS 118\, e2105618118 (2021)\nUnderstanding polaritonic chemistry from ab initio quantum electrodynamics\, M. Ruggenthaler\, D. Sidler\, A. Rubio\, Chemical Reviews 123\, 11191 (2023)\nTheory of quantum light-matter interaction in cavities: Extended systems and the long wavelength approximation\, Mark Kamper Svendsen\, Michael Ruggenthaler\, Hannes Hübener\, Christian Schäfer\, Martin Eckstein\, Angel Rubio\, Simone Latini  arXiv: arXiv:2312.17374\nCavity Spectroscopy for Strongly Correlated Systems\, Lukas Grunwald\, Emil Viñas Boström\, Mark Kamper Svendsen\, Dante M. Kennes\, Angel Rubio\, arXiv:2410.21515\n\n\n\nBio – Prof. Angel Rubio received his PhD in Physics with honors from the University of Valladolid in 1991 where he did fundamental work on the structural and optical properties of metallic clusters. Then moved to a postdoctoral position at UC Berkeley-Physics (92-95) where he predicted a new type of boron-nitride nanotubes (PRB1994) triggering their ensuing experimental synthesis. Between 1994 and 2001 as Professor at UVA he started the ab initio materials research open-source project octopus used now by over 1000 groups worldwide. Diverse Professorships at École Polytechnique Paris\, FU Berlin and Montpellier followed. In 2001 he moved as Chair of Condensed Matter Physics at UPV/EHU. There he engaged in highly successful work on modeling of excited-state properties of materials and nanostructures setting the foundations of modern theoretical spectroscopy (RMP2002). In August 2014 he accepted the position as Max Planck Director. There he has pioneered the development of quantum electrodynamical density functional theory (QEDFT)\, a novel theoretical framework for strong light-matter phenomena in chemistry and materials sciences (PNAS2015\, Nat.Rev.Chem.2018). His work has been recognized by several awards\, including the 2023 Spanish National Physics Prize “Blas Cabrera” 2018 Max Born medal and prize\, 2016 Medal of the Spanish Royal Physical Society and the 2014 Premio Rey Jaime I for basic research\, and more\, and elected member of different academies\, including the German Leopoldina Academy and Berlin-Brandenburgischen Akademie der Wissenschaften\, the European Academy of Sciences\, the Academia Europaea\, and a foreign associate member of the National Academy of Sciences (USA).\n\n\nThis is an in-person seminar. If you opt to join via zoom use Meeting ID 811 0958 3496 \, Passcode 587165
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-angel-rubio/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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DTSTART;TZID=America/New_York:20250616T081500
DTEND;TZID=America/New_York:20250620T170000
DTSTAMP:20250612T205138Z
CREATED:20250612T180945Z
LAST-MODIFIED:20250612T205138Z
UID:10001499-1750061700-1750438800@asrc.gc.cuny.edu
SUMMARY:The 13th ETOPIM International Conference
DESCRIPTION:You’re invited! Join us at the CUNY ASRC from June 16 to June 20 for the 13th ETOPIM international conference on elastic\, electrical\, transport\, and optical properties of inhomogeneous media. The conference\, hosted by the Photonics Initiative\, aims to discuss experimental and theoretical developments in the field of inhomogeneous materials and metamaterials. The week-long event will consist of exciting and informative talk’s from visionary scientists\, poster sessions\, networking opportunities\, and more. \nLearn more and read the conference’s full agenda at https://bit.ly/3FRBcZ3 \n \nDownload the Flyer
URL:https://asrc.gc.cuny.edu/event/the-13th-etopim-international-conference/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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DTSTART;TZID=America/New_York:20250625T130000
DTEND;TZID=America/New_York:20250625T140000
DTSTAMP:20250623T174410Z
CREATED:20250623T154002Z
LAST-MODIFIED:20250623T174410Z
UID:10001502-1750856400-1750860000@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative seminar: Wencan Jin
DESCRIPTION:Dr. Wencan Jin\, Auburn University \nHybrid magnon-phonon cavity realized in a magnetoelastic heterostructure\nAbstract – Strong coupling between two quantized excitations leads to a hybridized state that allows to explore new phenomena and technologies. Phononic excitations\, such as long-lived\, high-overtone acoustic waves\, can host many well-isolated modes at the same frequency. Meanwhile\, magnetic excitations or magnons in magnetically-ordered materials show frequency tunability and can strongly couple with phonons. In this study\, using the combination of analytical model\, epitaxial growth\, and spectroscopy characterization\, we design a hybrid magnon-phonon cavity based on the La0.7Sr0.3MnO3/SrTiO3 (LSMO/STO) heterostructure with magnetoelastic coupling at the interface. Ferromagnetic resonance (FMR) measurements demonstrate strong coupling between the Kittel magnon of LSMO and the standing wave of transverse acoustic phonon of STO\, as evidenced by their anticrossings in the FMR spectra. Remarkably\, when the STO undergoes a cubic-to-tetragonal phase transition at TS~105 K\, the Kittel magnon of LSMO splits into three bands due to the anisotropic strains along the [100]\, [010]\, and [001] crystalline orientations\, forming a network of hybrid magnon-phonon modes that are sensitive to strain engineering. Our work highlights high-quality magnetoelastic heterostructures as a suitable material platform to implement magnon-phonon hybrids\, holding the promise of storing\, encoding\, and transducing coherent information between magnon and phonon modes. \nBio – Wencan Jin graduated from Renmin University of China in 2011. He received his Ph.D. from Columbia University in 2017. He then worked as a Postdoctoral Researcher at the University of Michigan\, Ann Arbor and joined Auburn University as an Assistant Professor of Physics and Adjunct Professor of Electrical and Computer Engineering in 2019. His research focuses on optical spectroscopy (Raman\, SHG) and photoemission spectroscopy (ARPES\, XPS) studies of novel quantum materials with emphasis of ferroic orders in 2D vdW materials and complex oxides. \nThis is an in-person seminar. If you opt to join via zoom use Meeting ID 824 5649 1345\, Passcode 994582
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-wencan-jin/
LOCATION:ASRC 5th Floor Data Visualization Room\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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DTSTART;TZID=America/New_York:20250707T090000
DTEND;TZID=America/New_York:20250710T170000
DTSTAMP:20250612T190450Z
CREATED:20250609T144053Z
LAST-MODIFIED:20250612T190450Z
UID:10001498-1751878800-1752166800@asrc.gc.cuny.edu
SUMMARY:2025 IEEE Workshop: Photonics Automation with Python
DESCRIPTION:Any students or early-career researchers interested in automating photonics experiments with Python? Our Photonics Initiative is hosting a four‑day workshop from July 7 to July 10 that will teach you how to automate optical experiments using Python. LIMITED SEATS AVAILABLE. Apply by June 15! \nLearn more and register to attend at bit.ly/3ZSf9YT \n \nDownload the Flyer
URL:https://asrc.gc.cuny.edu/event/2025-ieee-workshop-photonics-automation-with-python/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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DTSTART;TZID=America/New_York:20250707T133000
DTEND;TZID=America/New_York:20250707T143000
DTSTAMP:20250627T164750Z
CREATED:20250626T220952Z
LAST-MODIFIED:20250627T164750Z
UID:10001504-1751895000-1751898600@asrc.gc.cuny.edu
SUMMARY:Two-part Photonics Initiative Seminar
DESCRIPTION:This is a two-part Photonics Initiative Seminar\, the first part describing information in light structure and the second part about structuring light in the lab. \nDr. Eileen Otte \nBeyond the Beam: The Potential of Light’s Structure\nWhen light interacts with a medium\, its spatial structure – including amplitude\, phase\, polarization\, angular momenta\, and more – is shaped by the medium’s properties across scales\, from the macro to the nanoscale. For example\, sunlight scattered in the blue daylight sky exhibits intriguing polarization patterns that encode the sun’s position—imperceptible to humans but used by insects like bees for navigation. At much the smaller\, molecular level\, the emission pattern of a single fluorescent molecule depends on its dipole orientation\, allowing nanoscale features to be decoded from the structured light it emits. \nInversely\, structured light can also be deliberately engineered\, making it a powerful tool across a wide range of applications\, including optical micro- and nano-manipulation\, motion sensing\, material machining\, and classical as well as quantum communication and encryption. Used in quantum key distribution\, structured light increases the dimension\, enhancing the information capacity per photon\, noise resilience\, and transmission distance. \nWe will explore how encoding and decoding information in the structure of light opens new avenues for advancing cutting-edge applications and emerging technologies. \nBio   Dr. Eileen Otte joined the Institute of Optics at the University of Rochester as a new faculty member in January 2025. Before\, she was a postdoctoral fellow at the Geballe Laboratory for Advanced Materials (GLAM)\, Stanford University\, advised by Prof. Mark Brongersma. Eileen’s research concentrates on the fundamental properties and diverse applications of structured light fields\, in areas such as singular optics\, nanoscale imaging and sensing\, quantum cryptography\, optical manipulation\, and more. In her postdoctoral research\, Eileen focused on nanoscale light-matter interactions\, combining structured light and nanophotonics. \nEileen performed her PhD work at the University of Muenster\, Germany\, and University of the Witwatersrand\, South Africa; it was honored with summa cum laude as well as the WWU Dissertation Award\, and published as a book in the Springer Theses series. She has also received the Research Award 2020 of the Industrial Club Duesseldorf\, was appointed a junior class member of the NRW Academy of Sciences\, Humanities\, and the Arts\, and was listed among the Emerging Leaders 2021 and Emerging Talents 2021 of IOP’s Journal of Optics. Her postdoctoral research was supported by the PRIME fellowship of the German Academic Exchange Service as well as Stanford’s GLAM Postdoctoral Fellowship. \n  \nDr. Michael de Oliveira\nShaping Light on Demand (with a Few Lines of Code)\nImagine sculpting light—twisting\, shaping\, and imprinting it with structure—as effortlessly as editing an image on a screen. In today’s photonics labs\, this is no longer a fantasy. Spatial light modulators (SLMs) have become versatile\, programmable tools that enable real-time control over light’s spatial and temporal properties\, driving advances in areas like microscopy\, optical tweezing\, quantum optics\, and beyond. This talk offers an accessible introduction to the principles and practice of shaping light with SLMs. We’ll unpack how these devices work\, how phase-only modulation can be used to encode both phase and complex amplitude\, and how to generate a wide range of structured beams—from optical vortices and exotic modes to dynamic space-time beams. We’ll walk through intuitive examples\, practical strategies\, and common challenges\, making this tutorial especially valuable for those new to SLMs or curious about integrating them into automated experimental setups. Whether you’re steering beams\, engineering light fields for nonlinear optics\, or encoding information for quantum communication\, this session will provide a clear and engaging foundation for shaping light in the lab. \nBio  Michael de Oliveira spends most of his time convincing light to do increasingly strange and complicated things—twist\, spin\, heal\, or dance through space-time—using devices like spatial light modulators\, metasurfaces and a generous dose of stubborn optimism. His research focuses on shaping light across multiple degrees of freedom—phase\, polarization\, amplitude\, frequency\, and time—to unlock new effects in photonics\, from ultrafast and nonlinear optics to quantum experiments. He firmly believes that light is just misunderstood—and that with enough patience\, whispered incantations to Maxwell\, and elaborate alignment rituals\, it can be made to do almost anything. Probably. \nMichael joined the ASRC and Prof. Andrea Alù’s group in 2025 as a Postdoctoral Research Fellow. He earned his PhD in Physics from the Politecnico di Milano in collaboration with the Italian Institute of Technology\, where he worked under the supervision of Dr. Antonio Ambrosio on multi-degree-of-freedom control of light for advanced photonic applications. Before that\, he completed his BSc in Astronomy & Astrophysics\, BSc (Honors)\, and MSc in Physics with distinction at the University of the Witwatersrand in South Africa\, where he began working with structured light under Prof. Andrew Forbes. \nhttps://gc-cuny-edu.zoom.us/j/83601898127?pwd=JgFROicFhdgwgNush0IbJqyOSfdpP6.1\nMeeting ID: 836 0189 8127       Passcode: 677460 \n2025 07 07 two part seminar
URL:https://asrc.gc.cuny.edu/event/two-part-photonics-initiative-seminar/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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DTSTART;TZID=America/New_York:20250718T110000
DTEND;TZID=America/New_York:20250718T150000
DTSTAMP:20250624T192718Z
CREATED:20250624T154221Z
LAST-MODIFIED:20250624T192718Z
UID:10001501-1752836400-1752850800@asrc.gc.cuny.edu
SUMMARY:Harlem Community Job Fair
DESCRIPTION:Calling all Harlem Residents and students! Attend our job fair on Friday\, July 18\, 2025\, from 11 a.m. to 3 p.m. to learn about local career opportunities and job training programs. RSVP at https://bit.ly/40jkjxe \nJoin us at the CUNY ASRC to meet representatives from City and Government-related organizations\, non-profits\, educational programs\, employment certification programs\, and more. This job fair is ideal for those seeking entry-level positions or wishing to change career paths. The recommended age is above 18 years old. Companies will have information tables and will be taking resumes and contact information from interested candidates. \nThis Job Fair is led by the Harlem community organization\, Rozelle’s Work in partnership with the IlluminationSpace at the CUNY ASRC. \n \nDownload the Flyer
URL:https://asrc.gc.cuny.edu/event/harlem-community-job-fair/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Environmental Sciences,Nanoscience,Neuroscience,Photonics,Structural Biology
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DTSTART;TZID=America/New_York:20250728T110000
DTEND;TZID=America/New_York:20250728T120000
DTSTAMP:20250623T155051Z
CREATED:20250617T181142Z
LAST-MODIFIED:20250623T155051Z
UID:10001500-1753700400-1753704000@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Mohammed Hassan
DESCRIPTION:Dr. Mohammed Th. Hassan\, University of Arizona\nFrom Attosecond Electron Microscopy Imaging To Petahertz Quantum Photonics\nAbstract – We present groundbreaking advancements in ultrafast electron microscopy\, quantum current tunneling in graphene\, and ultrafast squeezed light\, establishing transformative capabilities in attosecond science and technology1\,2. First\, we achieved attosecond temporal resolution in a transmission electron microscope by generating a single isolated attosecond electron pulse\, far surpassing the highest reported imaging resolutions3-5. This novel tool\, termed the “attomicroscope\,” represents the world’s fastest electron microscope\, enabling the imaging and control of electron motion dynamics in graphene. The attosecond electron imaging method offers real-time and spatial insights into the electron motion of neutral matter\, unlocking long-anticipated applications in quantum physics\, chemistry\, and biology5. \nNext\, we report the generation of light-induced quantum tunneling currents in graphene phototransistors in ambient conditions. This phenomenon allows precise measurement and control of field-driven currents\, demonstrating current switching at an unprecedented 630 attoseconds (~1.6 petahertz)6. By modulating the density of photoexcited charge carriers with variable pump laser powers\, we enhanced the graphene phototransistor conductivity and realized various logic gate operations. These findings pave the way for optical switches\, lightwave electronics\, and optical quantum computing7-9. \nLastly\, we extend the use of squeezed light to ultrafast quantum science\, demonstrating the generation of broadband quantum light pulses spanning 0.33 to 0.73 petahertz using a light field synthesizer and four- wave mixing10. These pulses exhibit amplitude squeezing consistent with theoretical predictions\, enabling real-time studies of quantum light-matter interactions. Furthermore\, we demonstrate binary digital data encoding onto these synthesized attosecond-resolved quantum light waveforms\, showcasing potential applications in secure quantum communication. This work sets the stage for ultrafast quantum optoelectronics\, next- generation quantum computing\, and encrypted communication networks capable of petahertz-scale data transmission speeds. \nReferences\n[1] Corkum\, & Krausz\, F. Nat. Phys. 3\, 381-387\, (2007).\n[2] Hassan\, T. et al. Nature 530\, 66-70\, (2016).\n[3] Hassan\, T. et al. Nat. Photon. 11\, 425-430\, (2017).\n[4] Hui\, \, Alqattan\, H.\, Sennary\, M.\, Golubev\, N. V. & Hassan\, M. T. Science Advances 10\, eadp5805\, (2024).\n[5] Hassan\, T. Physics Today 77 38–43 (2024).\n[6] Sennary\, et al. Nature Communications 16\, 4335\, (2025).\n[7] Hui\, et al. Nat. Photon. 16\, 33-37\, (2022).\n[8] Hassan\, T. ACS Photonics 11\, 334-338\, (2024).\n[9] Hui\, et al. Science Advances 9\, eadf1015\, (2023).\n[10]Sennary\, et al. arXiv preprint arXiv:2412.08881\, (2024). \nBio – Dr. Mohammed Hassan is an Associate Professor of Physics and Optical Sciences at The University of Arizona (UA). He earned his Ph.D. from the Max Planck Institute for Quantum Optics in Munich\, Germany\, in 2013\, working in the research group of Prof. Ferenc Krausz (Nobel Laureate\, 2023). He then joined the California Institute of Technology (Caltech) as a postdoctoral scholar in the group of Prof. Ahmed H. Zewail (Nobel Laureate\, 1999)\, where he conducted research until 2017. \nSome of Dr. Hassan scientific achievements can be summarized as follows: \nDr. Hassan is widely recognized for pioneering the field of attosecond electron microscopy\, introducing the “Attomicroscope“—the world’s fastest electron microscope capable of imaging electron motion in real time. This revolutionary tool has opened a new frontier in ultrafast imaging\, enabling direct visualization of electron behavior in solid-state materials and advancing quantum science. \nDr. Hassan group developed the first petahertz quantum phototransistor \, capable of switching on and off in just 630 attoseconds—a speed equivalent to 1.6 petahertz\, or over a million billion times per second. This unprecedented speed was demonstrated using a novel graphene-silicon-graphene (Gr-Si- Gr) transistor structure\, marking a significant leap toward the future of ultrafast light-driven electronics. \nMost recently\, Dr. Hassan has demonstrated all-optical switching and quantum current switching on the attosecond timescale\, setting a new world record for switching speed. Leveraging his expertise in light field synthesis\, he has also developed methods to digital encode data onto ultrafast laser pulses. Additionally\, he has introduced novel methodologies for sampling ultrafast laser light fields and measuring electronic response delays in neutral matter. \nHis research group has also achieved a major milestone in ultrafast quantum optics by demonstrating amplitude-squeezed quantum light\, which he has applied to developing highly secure\, high-speed quantum communication technologies. \nEarly in his career\, Dr. Hassan developed the light field synthesizer\, which enabled the generation of the first optical attosecond pulse—the shortest light pulse ever recorded\, earning recognition in the Guinness World Records. Using this breakthrough technology\, he measured the time it takes for an electron to respond and move\, providing unprecedented insight into ultrafast electron dynamics. He also utilized synthesized waveforms to generate extreme ultraviolet radiation from solids\, offering a new temporal perspective on high harmonic generation and electron behavior in condensed matter. \nDuring his postdoctoral tenure at Caltech\, Dr. Hassan optimized ultrafast optical gating techniques to generate electron pulses\, achieving the shortest electron pulse in an electron microscope. He also contributed to the first imaging of nanoparticle motion in a liquid state using ultrafast electron microscopy. His early breakthroughs were published in leading scientific journals. \nDr. Hassan’s contributions have earned him numerous prestigious honors\, including the International Max Planck Fellowship (2009)\, the Air Force Young Investigator Award (YIP\, 2019)\, and major research grants from the Gordon and Betty Moore Foundation (2018) and the W. M. Keck Foundation (2019). In 2022\, he received both the Inaugural AFOSR Director’s Research Initiative (DRI) Award and the Historically Black Colleges and Universities and Minority-Serving Institutions (HBCUs/MSIs) Award for his institution.
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-mohammed-hassan/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250825T110000
DTEND;TZID=America/New_York:20250825T120000
DTSTAMP:20250818T180224Z
CREATED:20250605T164326Z
LAST-MODIFIED:20250818T180224Z
UID:10001495-1756119600-1756123200@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Sergio Carbajo
DESCRIPTION:Dr. Sergio Carbajo\, UCLA\nQuantum Filmmaking: Capturing and Controlling Ultrafast Dynamics from Atoms to Applications\nAbstract – The ability to visualize and control quantum systems in action—spanning attosecond electron dynamics to functional protein motions—holds transformative potential for science and technology. Over the past decade\, advances in ultrafast photon and electron sources\, such as optical frequency combs\, X-ray free-electron lasers (XFELs)\, and compact quantum light sources\, have enabled unprecedented spatiotemporal resolution of quantum processes. These tools now allow us to “film” phenomena like photosynthetic water oxidation\, light-triggered protein conformational changes\, and quantum dot-based photon emission\, bridging gaps between fundamental physics and applications in energy\, medicine\, and computing. \nIn this talk\, I will present our recent breakthroughs in attosecond and femtosecond imaging\, including novel QED-based light-matter interactions and compact accelerator technologies that democratize access to ultrafast science. I will further outline a vision for the next decade: leveraging these tools to engineer functional quantum systems\, from scalable photonic quantum computing with high-fidelity cluster states to dynamic protein mapping for personalized medicine. By integrating interdisciplinary approaches—spanning quantum electrodynamics\, molecular biophysics\, and computational algorithms—our work aims to translate atomic-scale insights into solutions for societal challenges. This research not only expands the frontiers of attosecond science but also redefines its role in addressing global needs. \nBio – Carbajo is an assistant professor at the UCLA Electrical & Computer Engineering (ECE) and the UCLA Physics & Astronomy departments and a visiting professor at Stanford University’s Photon Science Division at SLAC National Accelerator Laboratory. He is the founder and director of the Quantum Light-Matter Cooperative\, a scientific consortium whose mission is to understand\, design\, and ultimately control light-driven physical processes to help solve interconnected socio-technological challenges. \nHe graduated with a BS in Telecom Engineering from Tecnun\, Universidad de Navarra in 2009. In 2012\, he received his M.Sc. in Electrical and Computer Engineering from Colorado State University’s National Science Foundation Engineering Research Center. Later he continued his joint doctoral program simultaneously at the Research Laboratory of Electronics\, Massachusetts Institute of Technology and the Center for Free Electron Laser Science\, Deutsches Elektronen Synchrotron\, and obtained his Ph.D. in Physics in 2015. He has received several awards recognizing his contributions to ultrafast photon sciences and their application in life and energy sciences\, including the 2024 Nature LSA Rising Star Award\, the 2024 Humboldt Fellow Award\, the 2024 ONR Young Investigator Program award\, the 2023 AFOSR Young Investigator Program award\, the 2021 Horizon Prize from the Royal Society of Chemistry\, the 2021 SPIE Early Career Award\, the Japan Society for the Promotion of Science Fellowship in 2019\, SRI 2018 Young Scientist Award\, and the PIER Helmholtz Foundation Dissertation Award in 2015\, among others. He teaches photonics\, ultrafast and quantum optics\, and accelerator physics at UCLA and at the U.S. Particle Accelerator School. He currently holds various patents\, is the author of over 100 peer-reviewed publications – including two book chapters – and has presented his work at over 60 international conferences. \n2025 08 25 Sergio Carbajo Photonics Seminar flier \nZoom Meeting ID: 835 3199 9957   Passcode: 664696
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-sergio-carbajo/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
ATTACH;FMTTYPE=image/jpeg:https://asrc.gc.cuny.edu/wp-content/uploads/media/event/photonics-initiative-seminar-sergio-carbajo/GettyImages-539003064_1280x720.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250828T110000
DTEND;TZID=America/New_York:20250828T120000
DTSTAMP:20250818T180447Z
CREATED:20250728T141710Z
LAST-MODIFIED:20250818T180447Z
UID:10001506-1756378800-1756382400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar:  Yohannes Abate
DESCRIPTION:Dr. Yohannes Abate\, The University of Georgia \nThere’s Plenty of Interaction at the Bottom\nAbstract – The formulation of quantum mechanics in the late 1920s forever changed physics. More recently\, quantum materials have emerged\, presenting fascinating opportunities in condensed matter physics. Elementary interactions among elements such as photons\, electrons\, phonons\, and other quasiparticles in quantum materials give rise to the emergence of intriguing phases and offer enormous opportunities for the development of quantum technologies. However\, investigating these interactions at the relevant length scale requires high-resolution methods beyond traditional far-field optical imaging and spectroscopy techniques\, which are constrained by the diffraction limit of light. Interestingly\, during the same period in the late 1920s\, a visionary scientist named Synge introduced a groundbreaking concept that could circumvent the diffraction limit. Synge shared his idea with Einstein\, who encouraged him to publish it. After years of pioneering work by various groups\, a powerful modern nano-optical technique\, a variant of Synge’s original idea has emerged that enables high-resolution exploration of plenty of nanoscale interactions\, some of which I will highlight in this talk. I will present examples from two classes of quantum materials\, correlated oxides and van der Waals (vdW) crystals\, that we studied across the visible to terahertz spectrum. Correlated oxides offer exciting opportunities to reconfigure nano-optoelectronic phenomena\, owing to their highly tunable local optical and electronic properties. Our recent results reveal how external perturbations\, such as applied strain\, fields\, or thermal input\, alter dopant distribution at the nanoscale in correlated oxides\, leading to ordered\, reconfigurable phases. This reconfigurability enables the design of robust artificial synapses and opens new frontiers for fundamental understanding of memory\, learning\, and information retention for brain-inspired information processing. In-plane vdW heterostructures composed of atomically thin monolayers with lateral interfaces\, distinct from vertical heterostructures\, can lead to intriguing physical phenomena arising from various interactions\, including intralayer coupling\, lateral strain\, interface defects\, spin-orbit interaction\, correlated electronic fluctuations\, and 2D alloys at interfaces. I will present recent results that provide quantitative insights into the role of these interactions in altering the complex dielectric function of 2D materials at the nanoscale. \nBio – Dr. Yohannes Abate is the Susan Dasher and Charles Dasher MD Professor of Physics at the University of Georgia and Founding Director of the Quantum Science & Engineering Program (https://quantum.uga.edu/). Abate’s condensed matter physics research interests include investigation of nanoscale and quantum phenomena and interactions in two-dimensional materials\, oxide materials\, and quantum emitters. Particularly his group is fascinated by how non-equilibrium or collective quantum phenomena that occur at the atomic/molecular scale result in nanoscale emergent behavior in quantum materials. His group implements various terahertz\, infrared\, optical spectroscopy and scanning probe techniques with diffraction unlimited spatial resolution. \nProfessor Abate joined the University of Georgia (UGA) as an associate professor of physics in August 2017. He received his PhD in Physics at the University of Iowa in 2006. From 2006-2009 he was a postdoctoral research fellow at the University of California\, Berkeley and Lawrence Berkeley National Laboratory. In September of 2009 he has spent time as a Visiting Scientist at the Nano-Photonics Laboratory\, Max-Planck-Institut für Biochemie\, Martinsried\, Germany. He has received the NSF Career Award (2016) and in 2023 he has been selected by the Gordon and Betty Moore Foundation as one of its 2023 Experimental Physics Investigators. He received the BS degree in physics from Addis Ababa University\, Ethiopia. He is a member of the American Physical Society and Materials Research Society. \n2025 08 28 Yohannes Abate Photonics Seminar flier \nZoom Meeting ID: 873 8977 0653   Passcode: 133893
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-yohannes-abate/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250925T140000
DTEND;TZID=America/New_York:20250925T150000
DTSTAMP:20250812T165428Z
CREATED:20250728T141447Z
LAST-MODIFIED:20250812T165428Z
UID:10001505-1758808800-1758812400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar:  Giulio Cerullo
DESCRIPTION:Dr. Giulio Cerullo\, Polytechnic University of Milan\n2D semiconductors: a platform for ultrafast photonics\nAbstract – Layered materials consist of crystalline sheets with strong in-plane covalent bonds and weak van der Waals out-of-plane interactions. These materials can be easily exfoliated to a single layer\, obtaining 2D materials with radically novel physico-chemical characteristics compared to their bulk counterparts. 2D semiconductors exhibit very strong light-matter interaction and exceptionally intense and ultrafast nonlinear optical response\, enabling a variety of applications in optoelectronics and photonics. Furthermore\, stacking 2D materials into heterostructures (HS) offers unlimited possibilities to design new materials tailored for applications \nThis talk will review our recent studies on the ultrafast non-equilibrium optical response of transition metal dichalcogenides (TMDs) and their HS. Using high time resolution ultrafast transient absorption (TA) spectroscopy\, we monitor the ultrafast onset of exciton formation in TMDs and the dynamics of strongly coupled phonons. Using helicity resolved TA spectroscopy we time-resolve and control intravalley spin-flip processes. In HS of TMDs we time-resolve ultrafast interlayer hole transfer and interlayer exciton formation processes. We also show that strong exciton nonlinear interactions can lead to a complete quenching of the Rabi splitting in TMD-based microcavities. \nBio – Dr. Giulio Cerullo is a Full Professor with the Physics Department\, Politecnico di Milano\, where he leads the Ultrafast Optical Spectroscopy laboratory\, and currently a Miller Visiting Professor at UC Berkeley. Prof. Cerullo’s research activity concerns on the one hand pushing our capabilities to generate and manipulate ultrashort light pulses\, and on the other hand using such pulses to capture the dynamics of ultrafast events in molecular and solid-state systems. He has published over 550 papers which have received >33000 citations (H-index: 92 on Scopus). He is a Fellow of the Optical Society of America\, of the European Physical Society and of the Accademia dei Lincei and past Chair of the Quantum Electronics and Optics Division of the European Physical Society. He has been General Chair of the conferences CLEO/Europe 2017\, Ultrafast Phenomena 2018 and the International Conference on Raman Spectroscopy 2024. In 2023\, he received the Quantum Electronics Prize of the European Physical Society. He is the co-founder of two spin off companies (NIREOS and Cambridge Raman Imaging). \nThis is an in-person seminar. If you opt to join via zoom use Meeting ID 863 4078 0240\, Passcode 924382
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-giulio-cerullo/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251003T100000
DTEND;TZID=America/New_York:20251003T110000
DTSTAMP:20250929T125814Z
CREATED:20250929T123743Z
LAST-MODIFIED:20250929T125814Z
UID:10001526-1759485600-1759489200@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Junichiro Kono
DESCRIPTION:Dr. Junichiro Kono\, Rice University\nCavity-Dressed Quantum Matter \nAbstract – There has been a growing realization that the properties of a material can be modified just by placing it in an optical cavity. The quantum vacuum fields surrounding the material inside the cavity can cause nonintuitive modifications of electronic states through ultrastrong vacuum–matter coupling\, producing a vacuum-dressed material with novel properties. Existing theoretical predictions include cavity-enhanced\, cavity-induced\, and cavity-mediated enhancement of electron–phonon coupling and superconductivity\, electron pairing\, anomalous Hall effect\, ferroelectric phase transitions\, quantum spin liquids\, and photon condensation. Achieving the so-called ultrastrong coupling (USC) regime is a prerequisite for observing these effects\, which arise when the interaction energy becomes a significant fraction of the bare photonic mode and matter excitation frequencies. Most intriguingly\, when a material is ultrastrongly coupled with cavity-enhanced vacuum electromagnetic fields\, its ground state will contain virtual photons. This nonperturbative virtual driving without external fields can lead to phase transitions in thermal equilibrium. This talk will describe our recent studies of USC phenomena in various solid-state cavity quantum electrodynamics systems in search of such vacuum-induced phases of matter. We utilize the phenomenon of Dicke cooperativity\, i.e.\, many-body enhancement of light–matter interaction\, to explore quantum-optical strategies for creating\, controlling\, and utilizing novel phases in condensed matter enabled by the quantum vacuum. \nBio – Junichiro Kono received his B.S. and M.S. degrees in applied physics from the University of Tokyo in 1990 and 1992\, respectively\, and completed his Ph.D. in physics from the State University of New York at Buffalo in 1995. He was a postdoctoral research associate at the University of California Santa Barbara from 1995-1997\, and the W. W. Hansen Experimental Physics Laboratory Fellow in the Department of Physics at Stanford University from 1997-2000. He joined the Department of Electrical and Computer Engineering of Rice University in 2000 as an Assistant Professor and was promoted to Associate Professor in 2005 and to Professor in 2009. He is currently a Professor in the Departments of Electrical & Computer Engineering\, Physics & Astronomy\, and Materials Science & Nanoengineering at Rice University. \n\nProfessor Kono has also founded and implemented multiple education programs\, including the nationally recognized international research experience program called NanoJapan. NanoJapan was funded by the U.S. National Science Foundation and received the Heiskell Award for Innovation from the Institute of International Education in 2008. In 2016\, his team was selected by the U.S.-Japan Council to implement TOMODACHI STEM @ Rice\, which serve as a catalyst for female Japanese students interested in science and engineering research and engagement with the U.S. through international research collaborations. Professor Kono is a leader in optical studies of condensed matter systems and photonic applications of nanosystems\, including semiconductor nanostructures and carbon-based nanomaterials. He has made a number of pioneering contributions to the diverse fields of semiconductor optics\, terahertz spectroscopy and devices\, ultrafast and quantum optics\, and condensed matter physics. \nSpecifically\, his high-impact achievements include: exploration of extreme nonlinear optics in semiconductors using small-energy photons; ultrafast optical manipulation of collective spins in ferromagnetic semiconductors; observation of the Aharonov-Bohm effect in carbon nanotubes via magneto-optics; ultrafast and nonlinear optical studies of carbon nanotubes; first observation of superfluorescence in a solid through cooperative recombination of quantum degenerate electron-hole pairs; and demonstrations of the ultrastrong coupling regime in high-Q terahertz cavities. Kono’s research group uses state-of-the-art spectroscopic techniques to probe charge\, spin\, and vibrational dynamics. Their experimental facilities include the RAMBO system — a unique mini-coil-based 30-T pulsed magnet system equipped with ultrafast and nonlinear optical spectroscopy setups.
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-kono/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251027T110000
DTEND;TZID=America/New_York:20251027T120000
DTSTAMP:20250825T182033Z
CREATED:20250408T124154Z
LAST-MODIFIED:20250825T182033Z
UID:10001488-1761562800-1761566400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Maria Antonietta Loi
DESCRIPTION:Dr. Maria Antonietta Loi\, University of Groningen \nCOLLOIDAL QUANTUM DOT SUPERLATTICES: TOWARDS OPTOELETRONIC METAMATERIALS \nAbstract – 3D superlattices made of colloidal quantum dots are a promising candidate for the next generation of optoelectronic devices as they are expected to exhibit a unique combination of tunable optical properties and coherent electrical transport through minibands. In my presentation I will show the fabrication of 3D superlattices of PbSe and PbS QDs with nanoscale-level controlled ordering over large areas [1\, 2]\, and of outstanding transport properties. The measured electron mobilities for PbSe superlattices are the highest ever reported for a self-assembled solid of fully quantum-confined objects (electron mobility up to 278 cm2 V−1 s−1). This ultimately demonstrates that optoelectronic metamaterials with highly tunable optical properties (in this case in the short-wavelength infrared spectral range) and charge mobilities approaching that of bulk semiconductor can be obtained. This finding paves the way toward a new generation of optoelectronic devices. \nReferences:  \n[1] J. Pinna\, R. Mehrabi Koushki\, D. S. Gavhane\, M. Ahmadi\, S. Mutalik\, M. Zohaib\, L. Protesescu\, B. J. Kooi\, G. Portale\, M. A. Loi\, Approaching Bulk Mobility in PbSe Colloidal Quantum Dots 3D Superlattices. Adv. Mater.\, 35\, 2207364 (2023). \n[2] J. Pinna\, E. Pili\, R. Mehrabi Koushki\, D. S. Gavhane\, F. Carlà\, B. J. Kooi\, G. Portale\, and M. A. Loi PbI2 Passivation of Three Dimensional PbS Quantum Dot Superlattices Toward Optoelectronic Metamaterials ACS Nano\, 18\, 29\, 19124 (2024). \nBio – Maria Antonietta Loi studied physics at the University of Cagliari in Italy where she received the PhD in 2001. In the same year she joined the Linz Institute for Organic Solar cells\, of the University of Linz\, Austria as a postdoctoral fellow. Later she worked as researcher at the Institute for Nanostructured Materials of the Italian National Research Council in Bologna\, Italy. In 2006 she became assistant professor and Rosalind Franklin Fellow at the Zernike Institute for Advanced Materials of the University of Groningen\, The Netherlands. She is now full professor in the same institution and chair of the Photophysics and OptoElectronics group. \nShe has published more than 300 peer-reviewed articles on photophysics and optoelectronics of different types of materials. In 2013 she has received an ERC Starting Grant and in 2022 and ERC Advanced Grant from the European Research Council. She currently serves as Editor-in-Chief of Applied Physics Letters and she is member of the international advisory board of several international journals in physics and materials physics. In 2018 she received the Physicaprijs from the Dutch physics association for her outstanding work on organic-inorganic hybrid materials. In 2020 she became fellow of the American Physical Society. In 2022 she was elected fellow of the Dutch Academy of Science (KNAW). In the same year she became fellow of the European Academy of Science (EURASC) and of the Royal Society of Chemistry. In 2025 she became Fellow of the Material Research Society. \nZoom Meeting ID 897 1535 6177 Passcode 199637
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-maria-antonietta-loi/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251028T163000
DTEND;TZID=America/New_York:20251028T183000
DTSTAMP:20251007T001942Z
CREATED:20251007T001942Z
LAST-MODIFIED:20251007T001942Z
UID:10001531-1761669000-1761676200@asrc.gc.cuny.edu
SUMMARY:Family Science Night
DESCRIPTION:Don’t be afraid of science; join us for Family Science Night at the CUNY ASRC. We will have fun science activities for all ages\, braaiiinns\, crystals\, lasers\, and more! Plus\, a tour with trick-or-treating on every floor. See you on October 28 from 4:30 p.m. to 6:30 p.m.\n\nRSVP today at https://bit.ly/4pWKPrD\n\n\nDownload and share the flyer
URL:https://asrc.gc.cuny.edu/event/family-science-night/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Environmental Sciences,Nanoscience,Neuroscience,Photonics,Structural Biology
ATTACH;FMTTYPE=image/jpeg:https://asrc.gc.cuny.edu/wp-content/uploads/media/event/family-science-night/TAYB8667_1280x720.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251110T100000
DTEND;TZID=America/New_York:20251110T110000
DTSTAMP:20251002T144030Z
CREATED:20251001T204419Z
LAST-MODIFIED:20251002T144030Z
UID:10001527-1762768800-1762772400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Francesco Valenti
DESCRIPTION:Correlation length of radiation-induced errors in superconducting devices\n\nAbstract – Superconducting quantum electronics are a promising avenue towards fully fledged quantum computation. They are currently limited by their short coherence times\, stemming from their sensitivity to perturbations\, which include… very tiny earthquakes! I will show recent work where we measured six superconducting resonators using nanosecond-resolution electronics. High energy particles impinge on the device chip\, and generate athermal phonons that propagate isotropically. Once this wavefront reaches the resonators\, it induces a phase shift: by resolving the differential time of arrival in the resonators\, we implement an on-chip seismic array. Equipped with this tool\, we uncover a millimetric decay for this type of correlated errors. I will discuss the implications for quantum processors\, and possible research avenues towards mitigation.\n\nBio – Francesco Valenti obtained his BSc in materials engineering from Politecnico di Torino (Italy) in 2015\, his MSc in physics at Université Grenoble Alpes (France) in 2017 (where he was also admitted to and completed the “Magistère de Physique” – excellence track in physics)\, and his Ph.D. at Karlsruhe Institute of Technology (Germany) in 2021\, where he worked in the group of Prof. Ioan Pop. His research interests include the design\, fabrication and characterization of microwave devices for quantum information and radioastronomy\, as well as the diagnostics and abatement of quasiparticle poisoning in superconducting quantum circuits. Since 2022 he works at IBM quantum\, where he focuses on the development\, debugging\, deployment and calibration of large scale quantum processors based on transmon qubits. Keen on drawing and painting since childhood\, he lives in New York City’s East Village\, spending his free time immersed in its rich art scene. \nTarget audience: students and early careers researchers interested in transitioning to industry. \n2025 11 10 Photonics Seminar flier Francesco Valenti
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-francesco-valenti/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251118T163000
DTEND;TZID=America/New_York:20251118T183000
DTSTAMP:20251118T224647Z
CREATED:20251110T213328Z
LAST-MODIFIED:20251118T224647Z
UID:10001538-1763483400-1763490600@asrc.gc.cuny.edu
SUMMARY:The Brain and The Environment Family Night
DESCRIPTION:Join us for The Brain and The Environment Family Night at the CUNY ASRC on Nov. 18 from 4:30 to 6:30 p.m. This fun and educational evening will explore how the environment affects the brain through hands-on science activities for all ages. Guests will have the opportunity to see live EEG demonstrations where you can see your brain activity in real time\, meet our leading science researchers\, tour the research facilities\, and enjoy light food and drinks. \nRSVP today at https://forms.gle/E2htnPbQEwsZTtir9 \n 
URL:https://asrc.gc.cuny.edu/event/the-brain-and-the-environment-family-night/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Environmental Sciences,Nanoscience,Neuroscience,Photonics,Structural Biology
ATTACH;FMTTYPE=image/jpeg:https://asrc.gc.cuny.edu/wp-content/uploads/media/event/the-brain-and-the-environment-family-night/TAYB8682_1280x720.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251120T110000
DTEND;TZID=America/New_York:20251120T120000
DTSTAMP:20251030T184428Z
CREATED:20251030T130826Z
LAST-MODIFIED:20251030T184428Z
UID:10001536-1763636400-1763640000@asrc.gc.cuny.edu
SUMMARY:Nanoscience Initiative + Photonics Initiative Seminar:  Dr. Shomeek Mukhopadhyay
DESCRIPTION:Abstract: \nMaterials Synthesis Using Low Temperature Plasmas – from energy storage to superconductivity \nPlasmas comprise of a quasi-neutral assembly of gaseous ions and electrons which exist at high temperatures (fusion) or low pressure (sputtering\, fluorescent lamps etc.)\, has been the workhorse for manufacturing semiconductor materials in the last 50 years. This talk will introduce a different\, ‘non -equilibrium’ plasma system which works at ambient pressure where the electrons are decoupled from ions and neutral atoms\, known as low temperature or atmospheric pressure plasma\, which has gained increasing attention in the last decade. Such systems are commercially used in ozone generation\, PFAS remediation and dental applications. In particular\, low temperature plasmas offer a versatile\, economic and scalable method for fabricating materials that are difficult using standard techniques like sputtering\, e- beam evaporation\, MOCVD or ALD. I will focus on two synthesis applications; \n\ncomplex oxides used in batteries\, supercapacitors and other energy storage applications\nsynthesizing nanocomposites with metal in layered materials like graphene and Boron Nitride which gives rise to disordered superconductivity\n\nFinally I will conclude with some thoughts and observations on materials synthesis under extreme ‘non-equilibrium’ conditions which can allow synthesis and stabilization of phases that normally occur at pressures in the earth’s core. \nResearch is funded by NSF\, ONR and ARO. \nBio: Shomeek Mukhopadhyay is currently a research scientist in Chemical engineering at Yale University. He received his PhD in Physics from Duke University in 2008. After postdoctoral positions at Levich Institute\, Columbia University and UC Riverside he joined Yale University in 2012 working with Eric Brown in Mechanical Engineering and Materials Science. His main research interests are in nanomaterials synthesis with applications in catalysis\, superconductivity\, energy storage and quantum sensing with Lisa Pfefferle. One of the central themes in the current work is to understand and harness the role of strain in 2D and layered materials. The work on plasma based material synthesis is a collaborative effort with York Plasma Institute\, Britain’s largest center for Plasma Research. In addition to research and teaching\, he also founded three startups focused on Synthesis\, PFAS remediation and Additive Manufacturing respectively and holds 5 patents. His work is funded by DOE\, NSF\, ARO and ONR and collaboration with York funded by the Royal Society.
URL:https://asrc.gc.cuny.edu/event/nanoscience-guest-speaker-materials-synthesis-using-low-temperature-plasmas-from-energy-storage-to-superconductivity-by-dr-shomeek-mukhopadhyay/
LOCATION:ASRC 5th Floor Data Visualization Room\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Nanoscience,Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251124T110000
DTEND;TZID=America/New_York:20251124T120000
DTSTAMP:20251111T170543Z
CREATED:20251111T150004Z
LAST-MODIFIED:20251111T170543Z
UID:10001539-1763982000-1763985600@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Siddhartha Ghosh
DESCRIPTION:Dr. Siddhartha Ghosh\, Northeastern University\nAcoustic wave microsystems for chip-scale RF and optical signal processing\nAbstract:  Acoustic waves are well-suited for a variety of signal processing applications including RF filtering and optical modulation. Advances in material and fabrication capabilities have enabled the demonstration of chip-scale subsystems in which phonons can exhibit strong interactions with a variety of other physical domains. This talk will discuss progress in the areas of acousto-electric (AE) amplification and acousto-optic (AO) modulation as well as present the development of a phononic integrated circuit platform. \nIn recent years\, non-reciprocal and switchable delay lines have generated great interest for applications in full duplex radio networks. As a result\, AE-based approaches to mitigating signal interference in the RF front end have been sought. Here we will consider the use of bonding processes for integrating thin film silicon and InGaAs on lithium niobate to produce strong non-reciprocity. These results are developed with regard to implementation in analog correlators and non-magnetic circulators. \nNext\, we will discuss the development of piezoelectrically-actuated AO modulators in polycrystalline and doped aluminum nitride (AlN) materials. Optical coupling to AlN thin films is demonstrated in the telecommunications bands\, enabling monolithic integration of photonic and bulk acoustic resonators. Overlap of these fields enables efficient conversion from RF to optical frequencies\, with applications in integrated microwave photonics and quantum information transfer. \nFinally\, we will present the development of phononic integrated circuits (PnICs) in scandium-doped aluminum nitride thin films on sapphire substrates. Here we demonstrate wavelength-scale confinement of guided surface acoustic waves to generate a library of components including bent waveguides\, splitters and directional couplers. The integration of PnICs with AE and AO effects will thus pave the way for a new class of robust hybrid acoustic microsystems for communications and information processing. \nBio: Siddhartha Ghosh is an Assistant Professor in the Department of Electrical and Computer Engineering at Northeastern University. He received the B.S. degree in from Cornell University in 2007\, the M.S.E. degree from the University of Pennsylvania in 2011 and the Ph.D. degree from Carnegie Mellon University in 2015\, all in electrical engineering. From 2015-2020 he was a member of the Technical Staff at MIT Lincoln Laboratory. He has served in the Technical Program Committees for the IEEE MEMS Conference\, the International Frequency Control Symposium (IFCS) and the CLEO Subcommittee on Micro- and Nano-Photonic Devices. He received the DARPA Young Faculty Award in 2023 and the NSF CAREER Award in 2024. His research interests include piezoelectric MEMS\, optomechanical resonators\, oscillator-based computing and acousto-electronic devices. \nZoom Meeting ID 821 2474 3755 Passcode 727052 \n2025 11 24 Photonics Seminar flier Siddhartha Ghosh
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-siddharthaghosh/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251202T140000
DTEND;TZID=America/New_York:20251202T150000
DTSTAMP:20251119T174858Z
CREATED:20251007T150735Z
LAST-MODIFIED:20251119T174858Z
UID:10001532-1764684000-1764687600@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Matthew White
DESCRIPTION:Dr. Matthew White\, University of Vermont\nHost: Matthew Sfeir \nMetal-dielectric photonic crystal organic light emitting diodes: band structure\, defect engineering\, and topological states.\nAbstract: We investigate the band structure of metal-dielectric photonic crystals comprising stacked organic semiconductor microcavities with silver metal mirrors. Employing organic semiconductor dielectric layers allows the unit cells in the crystal to function as optoelectronic devices including OLEDs and photodetectors\, whether addressed individually or collectively. Geometric variables and material composition are presented to tune the band structure and corresponding photonic wave functions within the crystal. When single defects are introduced into crystals\, individual unit cells with aperiodic dimensionality of the organic dielectric layer\, the resulting mid-gap defect states are shown to hybridize with a photonic band at certain resonant dimensions. The resonance of the defect cavity affects the transmittance of light through the device\, disrupting or enhancing the coupling between otherwise resonant cavities. If the defect is periodic throughout the crystal\, the effects on band structure are very different.  We introduce a periodic defect to every other metal layer\, which doubles the size of the unit cell and has previously been shown to induce a Peierls bandgap.  Defining a ratio R of the thickness of the even numbered and odd numbered metal layers\, the condition R=1 results in no Peierls gap as the cavities are uniform. We demonstrate that by varying that ratio from R<1 to R>1\, there is a point where the band collapses resulting in topological edge states\, heavily localized in the two outer-most cavities.  Topological domain walls are introduced within the bulk of a crystal with similar properties to soliton-like domain walls in the Su-Schrieffer-Heeger model. \nBiography: Matthew White is an Associate Professor of Physics and the director of the Materials Science Graduate Program at the University of Vermont.  His research focuses on materials and devices for light harvesting and light emission\, ranging from stability of commercial photovoltaic modules to nanostructured photonic devices.  Prior to joining UVM\, he was a postdoctoral researcher and then a fixed-term assistant professor in the Institute for Physical Chemistry at the Johannes Kepler University in Linz\, Austria.  He earned his PhD in Physics from the University of Colorado\, Boulder\, and a BS in Physics and Mathematics from the University of Washington. \nZoom Meeting ID 840 7627 0380 Passcode 908949 \n2025 12 02 Photonics Seminar flier Matthew White
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-matthew-white/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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DTSTART;TZID=America/New_York:20251205T100000
DTEND;TZID=America/New_York:20251205T110000
DTSTAMP:20251202T153254Z
CREATED:20251016T113049Z
LAST-MODIFIED:20251202T153254Z
UID:10001534-1764928800-1764932400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Igor Aharonovich
DESCRIPTION:Dr. Igor Aharonovich\, University of Technology Sydney\nQuantum Technologies with Hexagonal Boron Nitride\nAbstract – Engineering robust\, solid‐state quantum systems is amongst the most pressing challenges to realise scalable quantum photonic circuitry. In recent years\, quantum emitters in hexagonal boron nitride (hBN) have emerged as fascinating candidates for realisation of room temperature quantum technologies with hBN. \nIn this presentation I will discuss the photophysical properties of quantum emitters in hBN and expand on their utility in scalable quantum technologies. I will focus on avenues to engineer these defects and describe their most promising properties – including their spin – photon interfaces. Integration of the emitters with photonic resonators is in the heart of achieving quantum circuitry on chip\, and I will present our most recent attempts to achieve this goal. Taking advantage of the unique 2D nature of hBN\, I will also show potential assembly of quantum optoelectronic devices and discuss potential on chip tunability of quantum emitters in hBN. \nAll in all\, hBN possesses all the vital constituents to become the leading platform for integrated quantum photonics. To this extent\, I will highlight the challenges and opportunities in engineering hBN quantum photonic devices and will frame it more broadly in the growing interest with 2D materials nanophotonics. \n \nBio – Igor Aharonovich is an award-winning scientist working on cutting-edge research into quantum sources that are able to generate\, encode and distribute quantum information. A Professor in the School of Mathematical and Physical Sciences at UTS\, Igor investigates optically active defects in solids\, with the aim of identifying a new generation of ultra-bright solid state quantum emitters. He is a chief investigator at the ARC Centre of Excellence for Transformative Meta-Optical Materials (TMOS)\, and leads an international collaboration investigating the chemical structure of crystal imperfections\, or defects\, in the nanomaterial hexagonal boron nitride (hBN). In 2013\, he established the nanophotonics research group at UTS\, was promoted to Associate Professor in 2015\, and to a full Professor in 2018. His research group explores new quantum emitters in wide bandgap materials\, with the aim of fabricating quantum nanophotonic devices on a single chip for the next generation of quantum computing\, cryptography and bio-sensing. In 2016\, Igor and his team discovered the first quantum emitters in 2D materials that operate at room temperature based on defects in hBN. He has co-authored more than 200 peer-reviewed publications\, including one of the most cited reviews on diamond photonics. He has also written a road map for solid state single-photon sources. In 2019\, Igor co-founded the inaugural online photonics conference\, Photonics Online Meetup\, which attracted more than 1100 attendees from around the world\, and which was highlighted by top science outlets. The conference now runs twice a year. Igor has received several international awards including the Pawsey Medal (2017)\, the IEEE Photonics Young Investigator Award (2016) and in 2020 he was the recipient of the Kavli Foundation Early Career Lectureship in Materials Science from Materials Research Society. In 2021\, he became a Fellow of the Optical Society (OSA)\, and in 2024 elected as a fellow of SPIE.  Igor received his B.Sc. (2005) and M.Sc. (2007) in Materials Engineering from the Technion – Israel Institute of Technology\, and a PhD from the University of Melbourne (2010).
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-igor-aharonovich/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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