Interfacing GHz-bandwidth heralded single photons with a warm vapour Raman memory

From National Research Council Canada

DOI	Resolve DOI: https://doi.org/10.1088/1367-2630/17/4/043006
Author	Search for: Michelberger, P. S.; Search for: Champion, T. F. M.; Search for: Sprague, M. R.; Search for: Kaczmarek, K. T.; Search for: Barbieri, M.; Search for: Jin, X. M.; Search for: England, D. G.¹; Search for: Kolthammer, W. S.; Search for: Saunders, D. J.; Search for: Nunn, J.; Search for: Walmsley, I. A.
Name affiliation	National Research Council of Canada. Security and Disruptive Technologies
Format	Text, Article
Subject	Bandwidth; Four wave mixing; Multiplexing; Multiplexing equipment; Optical frequency conversion; Particle beams; Photons; Quantum computers; Quantum optics; Quantum memory; Raman interactions; Room temperature; Single photon storage; temporal multiplexer; Quantum communication
Abstract	Broadband quantum memories, used as temporal multiplexers, are a key component in photonic quantum information processing, as they make repeat-until-success strategies scalable. We demonstrate a prototype system, operating on-demand, by interfacing a warm vapour, high time-bandwidth-product Raman memory with a travelling wave spontaneous parametric down-conversion source. We store single photons and observe a clear influence of the input photon statistics on the retrieved light, which we find currently to be limited by noise. We develop a theoretical model that identifies four-wave mixing as the sole important noise source and point towards practical solutions for noise-free operation.
Publication date	2015-04-02
In	New Journal of Physics 17, 43006 (2 April 2015).
Language	English
Peer reviewed	Yes
NPARC number	21275667
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Record identifier	1f4ada34-850e-4003-91f0-d0880f78d9cc
Record created	2015-07-14
Record modified	2020-04-22

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Date modified:: 2023-03-31