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