TY - JOUR
T1 - Continuous heralding control of vortex beams using quantum metasurface
AU - Liang, Hong
AU - Ahmed, Hammad
AU - Tam, Wing Yim
AU - Chen, Xianzhong
AU - Li, Jensen
N1 - Funding Information:
The work is supported by the Hong Kong RGC (16304020, 16306521, C6013-18G, AoE/P-502/20) and by Croucher Foundation (CAS20SC01, CF23SC01). X.C. acknowledges support from the Engineering and Physical Sciences Research Council (EP/P029892/1), the Leverhulme Trust (RPG-2021-145), and the Royal Society International Exchanges (IES\R3\193046).
Publisher Copyright:
© 2023, The Author(s).
PY - 2023/6/14
Y1 - 2023/6/14
N2 - Metasurfaces utilize engineered nanostructures to achieve control on all possible dimensions of light, encouraging versatile applications, including beam steering, multifunctional lensing, and multiplexed holograms. Towards the quantum optical regime for metasurfaces, although significant efforts have been put into generating and analyzing specific quantum states, control schemes to further manipulate these quantum states or information are still limited. Here, based on a metasurface, we propose and experimentally demonstrate a continuous heralding scheme to remotely control a vortex beam with high robustness to noise using polarization-entangled photon pairs. Our metasurface entangles polarization and orbital angular momentum (OAM) and the polarization selection on heralding photon erases the which-OAM information on signal photon. It induces an interference of two different OAM states remotely, manifesting a continuous orbital rotation. Our results show that metasurfaces have potential applications in quantum communication and information processing in entangling information with increasing complexity in the content.
AB - Metasurfaces utilize engineered nanostructures to achieve control on all possible dimensions of light, encouraging versatile applications, including beam steering, multifunctional lensing, and multiplexed holograms. Towards the quantum optical regime for metasurfaces, although significant efforts have been put into generating and analyzing specific quantum states, control schemes to further manipulate these quantum states or information are still limited. Here, based on a metasurface, we propose and experimentally demonstrate a continuous heralding scheme to remotely control a vortex beam with high robustness to noise using polarization-entangled photon pairs. Our metasurface entangles polarization and orbital angular momentum (OAM) and the polarization selection on heralding photon erases the which-OAM information on signal photon. It induces an interference of two different OAM states remotely, manifesting a continuous orbital rotation. Our results show that metasurfaces have potential applications in quantum communication and information processing in entangling information with increasing complexity in the content.
UR - http://www.scopus.com/inward/record.url?scp=85162037028&partnerID=8YFLogxK
U2 - 10.1038/s42005-023-01262-5
DO - 10.1038/s42005-023-01262-5
M3 - Article
SN - 2399-3650
VL - 6
JO - Communications Physics
JF - Communications Physics
M1 - 140
ER -