Spin squeezing and light entanglement in coherent population trapping

We show that strong squeezing and entanglement can be generated at the output of a cavity containing atoms interacting with two fields in a coherent population trapping situation, on account of a nonlinear Faraday effect experienced by the fields close to a dark-state resonance in a cavity. Moreover...

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Bibliographic Details
Published in:	Physical review letters Vol. 97; no. 2; p. 023605
Main Authors:	Dantan, A, Cviklinski, J, Giacobino, E, Pinard, M
Format:	Journal Article
Language:	English
Published:	United States American Physical Society 14-07-2006
Subjects:	ATOMS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS FARADAY EFFECT FEEDBACK FLUCTUATIONS GROUND STATES NONLINEAR PROBLEMS Physics QUANTUM ENTANGLEMENT Quantum Physics RESONANCE SPIN STEADY-STATE CONDITIONS TRAPPING
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Summary:	We show that strong squeezing and entanglement can be generated at the output of a cavity containing atoms interacting with two fields in a coherent population trapping situation, on account of a nonlinear Faraday effect experienced by the fields close to a dark-state resonance in a cavity. Moreover, the cavity provides a feedback mechanism allowing to reduce the quantum fluctuations of the ground state spin, resulting in strong steady state spin squeezing.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.97.023605