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Wavevector multiplexed atomic quantum memory via spatially-resolved single-photon detection.

ABSTRACT: 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.

SUBMITTER: Parniak M

PROVIDER: S-EPMC5732182 | biostudies-other | 2017 Dec

REPOSITORIES: biostudies-other

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Wavevector multiplexed atomic quantum memory via spatially-resolved single-photon detection.

Parniak Michał M Dąbrowski Michał M Mazelanik Mateusz M Leszczyński Adam A Lipka Michał M Wasilewski Wojciech W

Nature communications 20171215 1

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 [Formu ...[more]

PMID: 29247218

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