Single photon production by rephased amplified spontaneous emission

R. N. Stevenson; M. R. Hush; A. R.R. Carvalho; S. E. Beavan; M. J. Sellars; J. J. Hope

doi:10.1088/1367-2630/16/3/033042

Single photon production by rephased amplified spontaneous emission

R. N. Stevenson, M. R. Hush, A. R.R. Carvalho, S. E. Beavan, M. J. Sellars, J. J. Hope

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Abstract

The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spontaneous emission from an atomic ensemble, then applying a population-inverting pulse to rephase the ensemble and produce a photon echo of the spontaneous emission events. The theoretical limits on the efficiency of the production are determined for several variants of the scheme. For an ensemble of uniform optical density, generating the initial spontaneous emission and its echo using transitions of different strengths is shown to produce single photons at 70% efficiency, limited by reabsorption. Tailoring the spatial and spectral density of the atomic ensemble is then shown to prevent reabsorption of the rephased photon, resulting in emission efficiency near unity.

Original language	English
Article number	033042
Journal	New Journal of Physics
Volume	16
DOIs	https://doi.org/10.1088/1367-2630/16/3/033042
Publication status	Published - Mar 2014

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title = "Single photon production by rephased amplified spontaneous emission",

abstract = "The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spontaneous emission from an atomic ensemble, then applying a population-inverting pulse to rephase the ensemble and produce a photon echo of the spontaneous emission events. The theoretical limits on the efficiency of the production are determined for several variants of the scheme. For an ensemble of uniform optical density, generating the initial spontaneous emission and its echo using transitions of different strengths is shown to produce single photons at 70% efficiency, limited by reabsorption. Tailoring the spatial and spectral density of the atomic ensemble is then shown to prevent reabsorption of the rephased photon, resulting in emission efficiency near unity.",

keywords = "quantum measurement, quantum memory, single photon, spin echo",

author = "Stevenson, {R. N.} and Hush, {M. R.} and Carvalho, {A. R.R.} and Beavan, {S. E.} and Sellars, {M. J.} and Hope, {J. J.}",

year = "2014",

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T1 - Single photon production by rephased amplified spontaneous emission

AU - Stevenson, R. N.

AU - Hush, M. R.

AU - Carvalho, A. R.R.

AU - Beavan, S. E.

AU - Sellars, M. J.

AU - Hope, J. J.

PY - 2014/3

Y1 - 2014/3

N2 - The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spontaneous emission from an atomic ensemble, then applying a population-inverting pulse to rephase the ensemble and produce a photon echo of the spontaneous emission events. The theoretical limits on the efficiency of the production are determined for several variants of the scheme. For an ensemble of uniform optical density, generating the initial spontaneous emission and its echo using transitions of different strengths is shown to produce single photons at 70% efficiency, limited by reabsorption. Tailoring the spatial and spectral density of the atomic ensemble is then shown to prevent reabsorption of the rephased photon, resulting in emission efficiency near unity.

AB - The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spontaneous emission from an atomic ensemble, then applying a population-inverting pulse to rephase the ensemble and produce a photon echo of the spontaneous emission events. The theoretical limits on the efficiency of the production are determined for several variants of the scheme. For an ensemble of uniform optical density, generating the initial spontaneous emission and its echo using transitions of different strengths is shown to produce single photons at 70% efficiency, limited by reabsorption. Tailoring the spatial and spectral density of the atomic ensemble is then shown to prevent reabsorption of the rephased photon, resulting in emission efficiency near unity.

KW - quantum measurement

KW - quantum memory

KW - single photon

KW - spin echo

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U2 - 10.1088/1367-2630/16/3/033042

DO - 10.1088/1367-2630/16/3/033042

M3 - Article

VL - 16

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 033042

ER -

Single photon production by rephased amplified spontaneous emission

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