Quantum coherence in a dissipative-driven system and the optical Stern-Gerlach experiment

被引：0

作者：

Moussa, M.H.Y. ^{[1
,2
]}

Mizrahi, S.S. ^{[1
,2
]}

Caldeira, A.O. ^{[1
,3
]}

机构：

[1] Loomis Laboratory of Physics, Univ. Illinois at Urbana-Champaign, 1110 W. Green Street, Urbana, IL 61801, United States

[2] Departamento de Física, Univ. Federal de São Carlos, Via Washington Luis, km 235, São Carlos, 13565-905, SP, Brazil

[3] Inst. de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, 13083-970, SP, Brazil

来源：

Physics Letters, Section A: General, Atomic and Solid State Physics | 1996年 / 221卷 / 3-4期

基金：

巴西圣保罗研究基金会;

关键词：

Pumps - Quantum theory;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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 Stern-Gerlach experiment. Other particular cases are also investigated.

引用

页码：145 / 152