An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms
Abstract We present our recently-built experimental setup designed to generate near-infrared and narrow-band correlated photon pairs by inducing four-wave mixing in a cold gas of 87Rb atoms confined in a magneto-optical trap. The experimental setup and its automation and control approach are described in detail. A characterization of the optical density of the atomic ensemble as well as the basic statistical measurements of the generated light are reported. The non-classical nature of the photon pairs is confirmed by observing a violation of Cauchy-Schwarz inequality by a factor of 5.6 × 10-5 in a Hanbury Brown - Twiss interferometer. A 1/e coherence time for the heralded, idler photons of 44 ± 0.1 ns is estimated from our observations. We are able to achieve a value of 104 s-1 pair-detection-rate, which results in a spectral brightness of 280 (MHz s)-1. The combination of high brightness and narrow-band spectrum makes this photon-pair source a viable tool in fundamental studies of quantum states and opens the door to use them in quantum technologies.
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Sociedad Mexicana de Física
2022
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oai:scielo:S0035-001X20220003000172023-04-10An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atomsArias-Téllez,N.Ángeles-Aguillón,I. F.Martínez-Cara,D.Martínez-Vallejo,A.Villegas-Aguilar,L. Y.Mendoza-López,L. A.Torres,Y. M.Gutiérrez-Arenas,R. A.Jáuregui,R.Sahagún Sánchez,D.Pérez Castillo,I.Ceré,A. Bi-photons quantum networks four wave mixing cold atoms quantum information Abstract We present our recently-built experimental setup designed to generate near-infrared and narrow-band correlated photon pairs by inducing four-wave mixing in a cold gas of 87Rb atoms confined in a magneto-optical trap. The experimental setup and its automation and control approach are described in detail. A characterization of the optical density of the atomic ensemble as well as the basic statistical measurements of the generated light are reported. The non-classical nature of the photon pairs is confirmed by observing a violation of Cauchy-Schwarz inequality by a factor of 5.6 × 10-5 in a Hanbury Brown - Twiss interferometer. A 1/e coherence time for the heralded, idler photons of 44 ± 0.1 ns is estimated from our observations. We are able to achieve a value of 104 s-1 pair-detection-rate, which results in a spectral brightness of 280 (MHz s)-1. The combination of high brightness and narrow-band spectrum makes this photon-pair source a viable tool in fundamental studies of quantum states and opens the door to use them in quantum technologies.info:eu-repo/semantics/openAccessSociedad Mexicana de FísicaRevista mexicana de física v.68 n.3 20222022-06-01info:eu-repo/semantics/articletext/htmlhttp://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0035-001X2022000300017en10.31349/revmexfis.68.031303 |
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Arias-Téllez,N. Ángeles-Aguillón,I. F. Martínez-Cara,D. Martínez-Vallejo,A. Villegas-Aguilar,L. Y. Mendoza-López,L. A. Torres,Y. M. Gutiérrez-Arenas,R. A. Jáuregui,R. Sahagún Sánchez,D. Pérez Castillo,I. Ceré,A. |
spellingShingle |
Arias-Téllez,N. Ángeles-Aguillón,I. F. Martínez-Cara,D. Martínez-Vallejo,A. Villegas-Aguilar,L. Y. Mendoza-López,L. A. Torres,Y. M. Gutiérrez-Arenas,R. A. Jáuregui,R. Sahagún Sánchez,D. Pérez Castillo,I. Ceré,A. An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms |
author_facet |
Arias-Téllez,N. Ángeles-Aguillón,I. F. Martínez-Cara,D. Martínez-Vallejo,A. Villegas-Aguilar,L. Y. Mendoza-López,L. A. Torres,Y. M. Gutiérrez-Arenas,R. A. Jáuregui,R. Sahagún Sánchez,D. Pérez Castillo,I. Ceré,A. |
author_sort |
Arias-Téllez,N. |
title |
An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms |
title_short |
An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms |
title_full |
An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms |
title_fullStr |
An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms |
title_full_unstemmed |
An experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms |
title_sort |
experimental setup to generate narrowband bi-photons via four-wave mixing in cold atoms |
description |
Abstract We present our recently-built experimental setup designed to generate near-infrared and narrow-band correlated photon pairs by inducing four-wave mixing in a cold gas of 87Rb atoms confined in a magneto-optical trap. The experimental setup and its automation and control approach are described in detail. A characterization of the optical density of the atomic ensemble as well as the basic statistical measurements of the generated light are reported. The non-classical nature of the photon pairs is confirmed by observing a violation of Cauchy-Schwarz inequality by a factor of 5.6 × 10-5 in a Hanbury Brown - Twiss interferometer. A 1/e coherence time for the heralded, idler photons of 44 ± 0.1 ns is estimated from our observations. We are able to achieve a value of 104 s-1 pair-detection-rate, which results in a spectral brightness of 280 (MHz s)-1. The combination of high brightness and narrow-band spectrum makes this photon-pair source a viable tool in fundamental studies of quantum states and opens the door to use them in quantum technologies. |
publisher |
Sociedad Mexicana de Física |
publishDate |
2022 |
url |
http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0035-001X2022000300017 |
work_keys_str_mv |
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