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International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)

Quantum Imaging Using Entangled Photon Pairs From Nonlinear Metasurfaces

Jinliang Ren, Jinyong Ma, Jihua Zhang, Andrey A. Sukhorukov

Published Sep 11, 2023• 0 citations
Publisher

Abstract

We present a novel imaging technique that combines quantum ghost and scanning imaging protocol to capture two-dimensional images using only a one-dimensional detector array, enabled by strong spatial correlations and tunable emission angle of entangled photon pairs emitted from an ultrathin nonlinear metasurface.
DOI
10.1109/metamaterials58257.2023.10289268

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Nonlinear optical metasurfaces, which relax the phase-matching constraints of bulk nonlinear crystals and allow for precise engineering, are opening new possibilities in the field of quantum photonics. Recent advancements have experimentally demonstrated high-resolution 2D imaging using a 1D detector array by combining quantum ghost imaging and all-optical scanning with spatially entangled photon pairs generated from a nonlinear metasurface. These findings establish metasurfaces as a promising platform for quantum imaging, communications, and sensing applications.
The quantum correction of photon pairs inspired the development of quantum ghost imaging principles. It offers fundamental advantages compared to conventional imaging, including the operation at ultra-low photon flux and the potential for higher resolution [1]. Over the last year, it was demonstrated experimentally that nonlinear metasurfaces with a thickness of only a few hundred nanometers can facilitate strongly enhanced generation of photon pairs through spontaneous parametric down-conversion (SPDC). Furthermore, the quantum photon state can be tailored to feature spatial [2] and spectral [3] entanglement. However, the potential of metasurface-based photon-pair sources for quantum imaging was not previously investigated.