Quantum metasurface for multiphoton interference and state reconstruction
- Australian National Univ., Canberra, ACT (Australia). Research School of Physics and Engineering and Nonlinear Physics Center
- Australian National Univ., Canberra, ACT (Australia). Research School of Physics and Engineering and Nonlinear Physics Center; Univ. of Bristol (United Kingdom). Quantum Technology Enterprise Centre, Quantum Engineering Technology Lab., H. H. Wills Physics Lab. and Dept. of Electrical and Electronic Engineering
- Australian National Univ., Canberra, ACT (Australia). Research School of Physics and Engineering and Nonlinear Physics Center; Univ. of New South Wales, Sydney, NSW (Australia). School of Engineering and Information Technology
- Australian National Univ., Canberra, ACT (Australia). Research School of Physics and Engineering and Nonlinear Physics Center; National Central Univ., Jhongli (Taiwan). Dept. of Optics and Photonics
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
- National Central Univ., Jhongli (Taiwan). Dept. of Optics and Photonics and Center for Astronautical Physics and Engineering
- Australian National Univ., Canberra, ACT (Australia). Research School of Physics and Engineering and Nonlinear Physics Center; Univ. of Technology Sydney, NSW (Australia). School of Mathematical and Physical Sciences
Metasurfaces based on resonant nanophotonic structures have enabled innovative types of flat-optics devices that often outperform the capabilities of bulk components, yet these advances remain largely unexplored for quantum applications. Here, we show that nonclassical multiphoton 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 multiphoton 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 ultrathin quantum metadevices for the manipulation and measurement of multiphoton quantum states, with applications in free-space quantum imaging and communications.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Australian Research Council (ARC); Ministry of Science and Technology (MOST) (Taiwan)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1474473
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6407 Vol. 361; ISSN 0036-8075
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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