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Conference on Lasers and Electro-Optics

Photon-pair generation and quantum-classical correspondence in nonlinear nanostructures

Andrey A. Sukhorukov

Published Jan 1, 2018• 0 citations
Publisher

Abstract

We present theoretical and experimental advances towards efficient photon-pair generation through spontaneous parametric down-conversion in nonlinear nanostructures and metasurfaces, enabling quantum entanglement engineering at sub-wavelength scale for photon generation with tailored polarization and spatial correlations.
DOI
10.1364/cleo_at.2018.jth3c.1

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Entangled photon-pairs generated through spontaneous parametric down-conversion (SPDC) have evolved into an indispensable resource for various quantum communication, imaging, sensing and computing schemes. While photon-pair sources are so far mostly based on bulk-optical nonlinear components, resonant nonlinear metasurfaces with sub-wavelength thickness have recently been demonstrated as a new platform for photon-pair generation [1]–[3]. Contrary to bulk and integrated nonlinear structures where phase matching steers the pair generation efficiency in different directions and wavelengths, nanostructures can control these properties via their optical resonances. However, the tunability of spatial photon emission in multiple directions remained an open challenge.
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