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Proceedings Paper

Parametric down-conversion in semiconductor metasurfaces (Conference Presentation)

Paper Abstract

We demonstrate photon-pair generation via spontaneous parametric down-conversion (SPDC) from two types of metasurfaces composed by AlGaAs nanocylinders: 1) monolithically fabricated on a selectively oxidized layer of AlAs epitaxially grown on a GaAs wafer; 2) fabricated by reporting the AlGaAs nanostructures on a transparent wafer via wafer bonding. In these samples, we observed SPDC both in back- and forward-scattering configurations, under excitation with a CW pump around 775 nm and single-photon detection on the signal and idler channels. The Bragg modulation of Mie-resonances enables paraxial SPDC, which demonstrates the potential of all-dielectric metasurfaces for quantum applications like on-axis quantum imaging.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11290, High Contrast Metastructures IX, 112900L (10 March 2020); doi: 10.1117/12.2545091
Show Author Affiliations
Giuseppe Marino, Univ. de Paris (France)
Adrien Borne, Univ. de Paris (France)
Carlo Gigli, Univ. de Paris (France)
Aristide Lemaître, Ctr. de Nanosciences et de Nanotechnologies (France)
CNRS (France)
Univ. Paris-Saclay (France)
Alberto Artioli, Univ. Grenoble Alpes (France)
CEA-Grenoble (France)
Jean-Michel Gérard, Univ. Grenoble Alpes (France)
Giuseppe Leo, Univ. de Paris (France)

Published in SPIE Proceedings Vol. 11290:
High Contrast Metastructures IX
Connie J. Chang-Hasnain; Andrei Faraon; Weimin Zhou, Editor(s)

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