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Proceedings Paper

Photon-pair generation via bound states in the continuum in nonlinear metasurfaces
Author(s): Matthew Parry; Yifei Xing; Lei Xu; Alexander Poddubny; Dragomir N. Neshev; Andrey A. Sukhorukov
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Paper 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.

Paper Details

Date Published: 31 December 2019
PDF: 2 pages
Proc. SPIE 11201, SPIE Micro + Nano Materials, Devices, and Applications 2019, 112010G (31 December 2019);
Show Author Affiliations
Matthew Parry, The Australian National Univ. (Australia)
Yifei Xing, The Australian National Univ. (Australia)
Lei Xu, The Univ. of New South Wales (Australia)
Alexander Poddubny, The Australian National Univ. (Russian Federation)
Ioffe Physical-Technical Institute (Australia)
Dragomir N. Neshev, The Australian National Univ. (Australia)
Andrey A. Sukhorukov, The Australian National Univ. (Australia)


Published in SPIE Proceedings Vol. 11201:
SPIE Micro + Nano Materials, Devices, and Applications 2019
M. Cather Simpson; Saulius Juodkazis, Editor(s)

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