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

P. S. Michelberger; T. F M Champion; M. R. Sprague; K. T. Kaczmarek; M. Barbieri; X. M. Jin; D. G. England; W. S. Kolthammer; D. J. Saunders; J. Nunn; I. A. Walmsley

doi:10.1088/1367-2630/17/4/043006

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

P. S. Michelberger, T. F M Champion, M. R. Sprague, K. T. Kaczmarek, M. Barbieri, X. M. Jin, D. G. England, W. S. Kolthammer, D. J. Saunders, J. Nunn, I. A. Walmsley

Department of Physics

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

82 Citations (SciVal)

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.

Original language	English
Article number	043006
Journal	New Journal of Physics
Volume	17
DOIs	https://doi.org/10.1088/1367-2630/17/4/043006
Publication status	Published - 1 Apr 2015

Keywords

quantum communication
quantum computer
quantum memory
Raman interaction
room-temperature
single photon storage
temporal multiplexer

ASJC Scopus subject areas

General Physics and Astronomy

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10.1088/1367-2630/17/4/043006

Cite this

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title = "Interfacing GHz-bandwidth heralded single photons with a warm vapour Raman memory",

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.",

keywords = "quantum communication, quantum computer, quantum memory, Raman interaction, room-temperature, single photon storage, temporal multiplexer",

author = "Michelberger, {P. S.} and Champion, {T. F M} and Sprague, {M. R.} and Kaczmarek, {K. T.} and M. Barbieri and Jin, {X. M.} and England, {D. G.} and Kolthammer, {W. S.} and Saunders, {D. J.} and J. Nunn and Walmsley, {I. A.}",

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AU - Michelberger, P. S.

AU - Champion, T. F M

AU - Sprague, M. R.

AU - Kaczmarek, K. T.

AU - Barbieri, M.

AU - Jin, X. M.

AU - England, D. G.

AU - Kolthammer, W. S.

AU - Saunders, D. J.

AU - Nunn, J.

AU - Walmsley, I. A.

PY - 2015/4/1

Y1 - 2015/4/1

N2 - 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.

AB - 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.

KW - quantum communication

KW - quantum computer

KW - quantum memory

KW - Raman interaction

KW - room-temperature

KW - single photon storage

KW - temporal multiplexer

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

Abstract

Keywords

ASJC Scopus subject areas

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