Manipulating Light with Optical Metasurfaces: from Classical to Quantum
Mu Wang
National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation
Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
Abstract – This talk focuses on the interaction of electromagnetic waves with metamaterials and manipulating the polarization state of light, which are essential for on-chip photonics and quantum information processing. By designing a metasurface based on geometrical-scaling-induced phase modulations, the transformation and distribution of different polarization-entangled photon pairs have been realized with multichannel dielectric metasurfaces. This is a significant development in applying metasurface to quantum networks. We also show a strategy to overcome the fundamental limit of polarization multiplexing capacity of metasurfaces by introducing the engineered noise to the precise solution of Jones matrix elements, where the conventional restriction of polarization multiplexing roots from the dimension constraint of the Jones matrix. This approach implies a new paradigm for high-capacity optical display, information encryption, and data storage. As a practical application, we also present a metasurface that achieves a matte appearance in reflection while offering broadband, perfect transmission, showcasing its potential for various optical technologies.
References:
Y.J. Gao et al., Simultaneous generation of arbitrary assembly of polarization states with geometrical-scaling-induced phase modulation, Physical Review X 10 (3), 031035 (2020)
Y.J. Gao, et al., Metasurface design for the generation of an arbitrary assembly of different polarization states, Physical Review B 104 (12), 125419 (2021)
Y.J. Gao, et al., Multichannel distribution and transformation of entangled photons with dielectric metasurfaces Physical Review Letters 129, 023601 (2022)
Xiong, et al., Breaking the limitation of polarization multiplexing in optical metasurfaces with engineered noise, Science 379, 294 (2023)
Chu, et al., Diffuse reflection and reciprocity-protected transmission via a random-flip metasurface, Science Advances 7, eabj0935 (2021)
Chu, et al., Matte surfaces with broadband transparency enabled by highly asymmetric diffusion of white light, Science Advances 10, eadm8061 (2024)
Bio – Mu Wang, Cheung-Kong Professor in condensed matter physics at Nanjing University (since 1997) and the adjunct professor at the Department of Materials Science and Chemical Engineering at Stony Brook University, New York (since 2021). His current research interests include the interaction of light and artificial microstructures, nanophotonics, metamaterials, and fundamentals of interfacial growth in crystallization. During the period of 2014.4-2024.5, he served as the senior associate editor for Physical Review Letters, the editor for Physical Review Materials, and the Outreach Coordinator for the APS Journals in China. He was elected as a Fellow of the IOP (UK), a Fellow of the American Physical Society, and a Fellow of Optica (Optical Society of America). He received his Bs. and Ph.D. degrees from Nanjing University and worked as a postdoctoral researcher at Nijmegen University, Netherlands.
This is an in-person seminar. If you opt to join via zoom use meeting ID 861 1475 2940 Passcode 616928