Bekenstein, RivkaPikovski, IgorPichler, HannesShahmoon, E.Yelin, SusanneLukin, M. D.2023-02-082020-03-30Bekenstein, R, Pikovski, I, Pichler, H, Shahmoon, E, Yelin, S. F, and Lukin, M. D. "Quantum Metasurfaces with Atom Arrays." Nature Physics 16, no. 6 (2020): 676-81.1745-24731745-2481https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37374284Metasurfaces mold the flow of classical light waves by engineering sub-wavelength patterns from dielectric or metallic thin films. We introduce and analyze a method in which quantum operator-valued reflectivity can be used to control both spatio-temporal and quantum properties of transmitted and reflected light. Such quantum metasurfaces are realized by entangling the macroscopic response of atomically thin atom arrays to light. We show that such a system allows for parallel quantum operations between atoms and photons as well as for the generation of highly entangled photonic states such as photonic GHZ and three-dimensional cluster states suitable for quantum information processing. We analyze the influence of imperfections as well as specific implementations based on atom arrays excited into Rydberg statesen-USGeneral Physics and AstronomyJournal Article2023-02-0810.1038/s41567-020-0845-5