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Type: Artigo de periódico
Title: Quantum coherence in a dissipative-driven system and the optical Stern-Gerlach experiment
Author: Moussa, MHY
Mizrahi, SS
Caldeira, AO
Abstract: The quantum coherence of a single mode electromagnetic field in a cavity is analysed when a linear pumping is considered together with the damping mechanism of the cavity, An expression for the decoherence time of the field is estimated and it turns out to be independent of the pumping process, An interesting situation occurs in the long time limit when the action of the pumping is shown to induce a finite degree of quantum coherence in the stationary state of the field. For specific values of the parameters involved in the problem this state is very close to a coherent state and is considered in the realization of the optical Stem-Gerlach experiment. Other particular cases are also investigated.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/0375-9601(96)00577-4
Date Issue: 1996
Appears in Collections:Unicamp - Artigos e Outros Documentos

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