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Type: Journal article
Title: An ultra-high optical depth cold atomic ensemble for quantum memories
Author: Sparkes, B.
Bernu, J.
Hosseini, M.
Geng, J.
Glorieux, Q.
Altin, P.
Lam, P.
Robins, N.
Buchler, B.
Citation: Journal of Physics : Conference Series, 2013; 467(1):012009-1-012009-5
Publisher: IOP Publishing
Issue Date: 2013
ISSN: 1742-6588
Statement of
B. M. Sparkes, J. Bernu, M. Hosseini, J. Geng, Q. Glorieux, P. A. Altin, P. K. Lam, N. P. Robins, and B. C. Buchler
Abstract: Quantum memories for light lie at the heart of long-distance provably-secure communication. Demand for a functioning quantum memory, with high efficiency and coherence times approaching a millisecond, is therefore at a premium. Here we report on work towards this goal, with the development of a 87Rb magneto-optical trap with a peak optical depth of 1000 for the D2 F = 2 → F' = 3 transition using spatial and temporal dark spots. With this purpose-built cold atomic ensemble we implemented the gradient echo memory (GEM) scheme on the D1 line. Our data shows a memory efficiency of 80 ± 2% and coherence times up to 195 μs.
Description: 21st International Conference on Laser Spectroscopy – ICOLS 2013
Rights: Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd
DOI: 10.1088/1742-6596/467/1/012009
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