An ultra-high optical depth cold atomic ensemble for quantum memories

B. M. Sparkes; J. Bernu; M. Hosseini; J. Geng; Q. Glorieux; P. A. Altin; P. K. Lam; N. P. Robins; B. C. Buchler

doi:10.1088/1742-6596/467/1/012009

An ultra-high optical depth cold atomic ensemble for quantum memories

B. M. Sparkes, J. Bernu, M. Hosseini, J. Geng, Q. Glorieux, P. A. Altin, P. K. Lam, N. P. Robins, B. C. Buchler

Electrical and Computer Engineering

Research output: Contribution to journal › Conference article › peer-review

6 Scopus citations

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.

Original language	English (US)
Article number	012009
Journal	Journal of Physics: Conference Series
Volume	467
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/467/1/012009
State	Published - 2013
Event	21st International Conference on Laser Spectroscopy, ICOLS 2013 - Berkeley, CA, United States Duration: Jun 9 2013 → Jun 14 2013

ASJC Scopus subject areas

General Physics and Astronomy

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10.1088/1742-6596/467/1/012009

Cite this

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title = "An ultra-high optical depth cold atomic ensemble for quantum memories",

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.",

author = "Sparkes, {B. M.} and J. Bernu and M. Hosseini and J. Geng and Q. Glorieux and Altin, {P. A.} and Lam, {P. K.} and Robins, {N. P.} and Buchler, {B. C.}",

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T1 - An ultra-high optical depth cold atomic ensemble for quantum memories

AU - Sparkes, B. M.

AU - Bernu, J.

AU - Hosseini, M.

AU - Geng, J.

AU - Glorieux, Q.

AU - Altin, P. A.

AU - Lam, P. K.

AU - Robins, N. P.

AU - Buchler, B. C.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

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ER -

An ultra-high optical depth cold atomic ensemble for quantum memories

Abstract

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