@inproceedings{c6b1ed7dd4ba41b483da3a03fca23547,
title = "Photon-pair generation via bound states in the continuum in nonlinear metasurfaces",
abstract = "Generation of photon pairs in nonlinear materials enables the creation of non-classical entangled photon states. With ultra-thin metasurfaces, composed of optical nano-resonators, one can enable the ultimate in miniaturising nonlinear photon sources along with unprecedented configurability. We present a novel design of a nonlinear metasurface incorporating AlGaAs nanodisks with oligomer-holes, which features symmetry protected bound states in the continuum. It enables enhanced photon-pair generation at non-degenerate photon frequencies via spontaneous parametric down-conversion. This opens the potential for quantum-entanglement between photons at ultra-short time-scales across the visible and infrared regions, leading to new opportunities for quantum spectroscopy, sensing, and imaging.",
keywords = "Bound state in the continuum, Dielectric, Entanglement, Metasurface, Photon-pair generation",
author = "Matthew Parry and Yifei Xing and Lei Xu and Alexander Poddubny and Neshev, {Dragomir N.} and Sukhorukov, {Andrey A.}",
note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; SPIE Micro + Nano Materials, Devices, and Applications 2019 ; Conference date: 09-12-2019 Through 12-12-2019",
year = "2019",
doi = "10.1117/12.2539888",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Simpson, {M. Cather} and Saulius Juodkazis",
booktitle = "SPIE Micro + Nano Materials, Devices, and Applications 2019",
address = "United States",
}