Stark位移对两全同原子TavisCummings模型中的原子纠缠的影响

桑明煌; 戴海浪; 王贤平; 周行

doi:doi:10.3788/gzxb20134205.0627

光子学报, 2013, 42 (5): 627, 网络出版: 2013-05-22

Stark位移对两全同原子TavisCummings模型中的原子纠缠的影响

Effect of the Stark Shift on Atom Entanglement in a Two Identity Atoms TavisCummings Model

论文大纲

桑明煌 ^*戴海浪王贤平周行

作者单位

江西师范大学物理与通信电子学院，南昌 330027

量子光学两全同原子 TavisCummings模型 Stark位移原子纠缠 Quantum optics Two identity atoms TavisCummings model Stark shift Atomic entanglement

摘要

通过研究两全同原子初始处于最大纠缠态，光场处于单模时的原子纠缠动力学及Tavis-Cummings模型（TC模型），分析了在TC模型全同原子系统的Hamilton量中加入Stark位移时对原子纠缠的退相干时间的影响.结果表明：不考虑Stark位移时两原子在系统演化过程中周期性地出现退纠缠现象；考虑Stark位移时，两全同原子长时间地纠缠.

Abstract

Two identity atoms initially in a maximally entangled state, the fields in the singlemodel thermal fields, and the TavisCummings (TC) model are studied. Effects of Stark shift added in the Hamilton of the two identity atoms TC system on the decoherence time of atomic entanglement are analyzed. The results show that the two atoms evolve periodically into a disentangled separable state when Stark shift is not considered; the two atoms keep longlived entanglement when Stark shift is considered.

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桑明煌, 戴海浪, 王贤平, 周行. Stark位移对两全同原子TavisCummings模型中的原子纠缠的影响[J]. 光子学报, 2013, 42(5): 627. 桑明煌, 戴海浪, 王贤平, 周行. Effect of the Stark Shift on Atom Entanglement in a Two Identity Atoms TavisCummings Model[J]. ACTA PHOTONICA SINICA, 2013, 42(5): 627.

Stark位移对两全同原子TavisCummings模型中的原子纠缠的影响

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