Time-reversed and coherently enhanced memory: A single-mode quantum atom-optic memory without a cavity

J. L. Everett; P. Vernaz-Gris; G. T. Campbell; A. D. Tranter; K. V. Paul; A. C. Leung; P. K. Lam; B. C. Buchler

doi:10.1103/PhysRevA.98.063846

Time-reversed and coherently enhanced memory: A single-mode quantum atom-optic memory without a cavity

J. L. Everett, P. Vernaz-Gris, G. T. Campbell, A. D. Tranter, K. V. Paul, A. C. Leung, P. K. Lam, B. C. Buchler^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The efficiency of an ensemble-based optical quantum memory depends critically on the strength of the atom-light coupling. An optical cavity is an effective method to enhance atom-light coupling strength, with the drawback that cavities can be difficult to integrate into a memory setup. In this work we show coherent enhancement of atom-light coupling via an interference effect. The light to be absorbed into the atomic ensemble is split and used to drive the atoms from opposite ends of the ensemble. We compare this method theoretically to a cavity-enhanced scheme and present experimental results for our coherent enhancement in cold Rb87 atoms that show an efficiency of 72±5% and a storage lifetime of 110±10μs.

Original language	English
Article number	063846
Journal	Physical Review A
Volume	98
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.98.063846
Publication status	Published - 28 Dec 2018

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title = "Time-reversed and coherently enhanced memory: A single-mode quantum atom-optic memory without a cavity",

abstract = "The efficiency of an ensemble-based optical quantum memory depends critically on the strength of the atom-light coupling. An optical cavity is an effective method to enhance atom-light coupling strength, with the drawback that cavities can be difficult to integrate into a memory setup. In this work we show coherent enhancement of atom-light coupling via an interference effect. The light to be absorbed into the atomic ensemble is split and used to drive the atoms from opposite ends of the ensemble. We compare this method theoretically to a cavity-enhanced scheme and present experimental results for our coherent enhancement in cold Rb87 atoms that show an efficiency of 72±5% and a storage lifetime of 110±10μs.",

author = "Everett, {J. L.} and P. Vernaz-Gris and Campbell, {G. T.} and Tranter, {A. D.} and Paul, {K. V.} and Leung, {A. C.} and Lam, {P. K.} and Buchler, {B. C.}",

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AU - Everett, J. L.

AU - Vernaz-Gris, P.

AU - Campbell, G. T.

AU - Tranter, A. D.

AU - Paul, K. V.

AU - Leung, A. C.

AU - Lam, P. K.

AU - Buchler, B. C.

PY - 2018/12/28

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AB - The efficiency of an ensemble-based optical quantum memory depends critically on the strength of the atom-light coupling. An optical cavity is an effective method to enhance atom-light coupling strength, with the drawback that cavities can be difficult to integrate into a memory setup. In this work we show coherent enhancement of atom-light coupling via an interference effect. The light to be absorbed into the atomic ensemble is split and used to drive the atoms from opposite ends of the ensemble. We compare this method theoretically to a cavity-enhanced scheme and present experimental results for our coherent enhancement in cold Rb87 atoms that show an efficiency of 72±5% and a storage lifetime of 110±10μs.

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JO - Physical Review A

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Time-reversed and coherently enhanced memory: A single-mode quantum atom-optic memory without a cavity

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