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Conference on Lasers and Electro-Optics

Wavevector-multiplexed and memory-enabled source of multimode nonclassical light

Michal P. Parniak, Michał Dąbrowski, Mateusz Mazelanik, Adam Leszczyński, Michał Lipka, Wojciech Wasilewski

Published Jan 1, 2018• 0 citations
Publisher

Abstract

We demonstrate a quantum memory based on cold atomic ensemble generating and storing nonclassical light in 665 modes. With novel spin-wave manipulation techniques our system surfaces as a universal platform for quantum state preparation.
DOI
10.1364/cleo_qels.2018.fm4h.6

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Parallelized quantum information processing requires tailored quantum memories to simultaneously handle multiple photons. The spatial degree of freedom is a promising candidate to facilitate such photonic multiplexing. Using a single-photon resolving camera, we demonstrate a wavevector multiplexed quantum memory based on a cold atomic ensemble. Observation of nonclassical correlations between Raman scattered photons is confirmed by an average value of the second-order correlation function [Formula: see text] in 665 separated modes simultaneously. The proposed protocol utilizing the multimode memory along with the camera will facilitate generation of multi-photon states, which are a necessity in quantum-enhanced sensing technologies and as an input to photonic quantum circuits.