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理论物理通讯：英文版

Dynamical Properties of Two Coupled Dissipative QED Cavities Driven by Coherent Fields

Hou, Bang-Pin, Wang, Shun-Jin, Gäng, Sun Sun, Weili

Published Jan 1, 2007• 0 citations

Abstract

当由协调的地驾驶的二个相同证完洞位于一致环境时，除了驱散，出现在二个洞之间的间接联合由背景地导致了。我们调查协调的地，驱散以及在系统的下列动态性质上的支离破碎的联合的效果：光子转移，可逆 decoherence，和量状态转，等等。我们发现在洞的光子不由于在洞和 enviroment 之间的集体联合完全漏进环境，并且光子由于支离破碎的联合与更少的与更多的光子从洞不可逆转地被转移到洞以便快在二个洞之中同等地分布式。协调删除在二个洞上抽增加吝啬的光子，补充可逆 decoherence 的复兴的大小，但是妨碍在二个洞之间的量状态转移。上述现象可以在量通讯和另外的基本的域发现应用。

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当由协调的地驾驶的二个相同证完洞位于一致环境时，除了驱散，出现在二个洞之间的间接联合由背景地导致了。我们调查协调的地，驱散以及在系统的下列动态性质上的支离破碎的联合的效果：光子转移，可逆 decoherence，和量状态转，等等。我们发现在洞的光子不由于在洞和 enviroment 之间的集体联合完全漏进环境，并且光子由于支离破碎的联合与更少的与更多的光子从洞不可逆转地被转移到洞以便快在二个洞之中同等地分布式。协调删除在二个洞上抽增加吝啬的光子，补充可逆 decoherence 的复兴的大小，但是妨碍在二个洞之间的量状态转移。上述现象可以在量通讯和另外的基本的域发现应用。

When two identical QED cavities driven by the coherent fields are located in a uniform environment, in addition to dissipation, there appears an indirect coupling between the two cavities induced by the background fields. We investigate the effects of the coherent fields, the dissipation as well as the incoherent coupling on the following dynamical properties of the system: photon transfer, reversible decoherence, and quantum state transfer, etc. We find that the photons in the cavities do not leak completely into the environment due to the collective coupling between the cavities and the enviroment, and the photons are transferred irreversibly from the cavity with more photons to the cavity with less ones due to the incoherent coupling so that they are equally distributed among the two cavities. The coherent field pumping on the two cavities increases the mean photons, complements the revived magnitude of the reversible decoherence, but hinders the quantum state transfer between the two cavities. The above phenomena may find applications in quantum communication and other basic fields.

一个计划被建议了因为产生在 mesoscopic 之间的宏观的纠纷挤压了由与高质量的因素在洞认为二光子的相互作用和单人赛是 N 二水平的原子的光子相互作用的协调状态由一块强壮的开车场地帮助了的真空状态和 mesoscopic。而且，我们分别地为单个光子相互作用和二光子的相互作用导出消散的相互作用模型。忠实的相应分析表情能被给。我们的计划能在洞证完上在当前的技术被认识到。

We study the dynamics of a collection of two-level atoms interacting with a single mode of a quantized field in a dissipative cavity in the dispersive regime. The quantized mode is driven by a classical driving field. The steady-state density matrix is obtained. The influence of the driving field on the quantized driven field and on atomic properties in both the dissipative and the lossless cases is studied. The atomic decoherence time in the dissipative-driven case is obtained. We show that the external driving field strongly suppresses the atomic coherence (in comparison with the dissipative cavity without the driving field).