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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 11 — Nov. 1, 2009
  • pp: 1048–1050

Non-classical correlation between a single photon and the collective spin excited state of a cold atomic ensemble

Xiaosong Lu, Qunfeng Chen, Baosen Shi, and Guangcan Guo  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 11, pp. 1048-1050 (2009)


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Abstract

We experimentally establish a non-classical correlation between a single Stokes photon and the collective spin excited state of a cold atomic ensemble by using a spontaneous Raman scattering process. The correlation between them can be proved by transferring the spin excited state of the atomic ensemble into an anti-Stokes photon and checking the Cauchy-Schwarz inequality between the Stokes and the anti-Stokes photons. The non-classical correlation can be kept for at least 300 ns.

© 2009 Chinese Optics Letters

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(270.1670) Quantum optics : Coherent optical effects
(270.5585) Quantum optics : Quantum information and processing

Citation
Xiaosong Lu, Qunfeng Chen, Baosen Shi, and Guangcan Guo, "Non-classical correlation between a single photon and the collective spin excited state of a cold atomic ensemble," Chin. Opt. Lett. 7, 1048-1050 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-11-1048

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