Quantum metasurface for multi-photon interference and state reconstruction

Autor: Wang, Kai, Titchener, James G., Kruk, Sergey S., Xu, Lei, Chung, Hung-Pin, Parry, Matthew, Kravchenko, Ivan I., Chen, Yen-Hung, Solntsev, Alexander S., Kivshar, Yuri S., Neshev, Dragomir N., Sukhorukov, Andrey A.
Rok vydání: 2018
Předmět:
Zdroj: Science 361, 1104-1108 (2018)
Druh dokumentu: Working Paper
DOI: 10.1126/science.aat8196
Popis: Metasurfaces based on resonant nanophotonic structures have enabled novel types of flat-optics devices often outperforming the capabilities of bulk components, yet these advances remain largely unexplored for quantum applications. We show that non-classical multi-photon interferences can be achieved at the subwavelength scale in all-dielectric metasurfaces. We simultaneously image multiple projections of quantum states with a single metasurface, enabling a robust reconstruction of amplitude, phase, coherence, and entanglement of multi-photon polarization-encoded states. One- and two-photon states are reconstructed through nonlocal photon correlation measurements with polarization-insensitive click-detectors positioned after the metasurface, and the scalability to higher photon numbers is established theoretically. Our work illustrates the feasibility of ultra-thin quantum metadevices for the manipulation and measurement of multi-photon quantum states with applications in free-space quantum imaging and communications.
Comment: 19 pages, 14 figures
Databáze: arXiv
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