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

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DOIResolve DOI: http://doi.org/10.1088/1367-2630/17/4/043006
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TypeArticle
Journal titleNew Journal of Physics
ISSN1367-2630
Volume17
Article number43006
SubjectBandwidth; 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
AbstractBroadband 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
PublisherIOP Publishing
LanguageEnglish
AffiliationNational Research Council Canada; Security and Disruptive Technologies
Peer reviewedYes
NPARC number21275667
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Record identifier1f4ada34-850e-4003-91f0-d0880f78d9cc
Record created2015-07-14
Record modified2016-05-09
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