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arXiv 1111.5208quant-ph
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光纤耦合腔中两原子的长寿命量子关联

Thermally generated long-lived quantum correlations for two atoms trapped in fiber-coupled cavities

Vitalie Eremeev, Víctor Montenegro, Miguel Orszag

摘要:

讨论了驱动两量子比特系统达到稳定的长寿命纠缠的理论模型。整个系统由两个原子表示,最初处于基态并解纠缠,每个原子耦合到一个单独的腔,腔通过光纤连接。腔和纤维与它们各自的热环境交换能量。在这些条件下,我们应用微观主方程理论发展的开放量子系统的动力学。通过推导两量子比特系统的密度算符,我们发现在环境的热激发下,会产生稳定的长寿命量子关联。据我们所知,在腔量子电动力学(CQED)的近似下,在由广义微观主方程描述的量子开放系统中没有观察到类似的效应。

英文摘要:

A theoretical model for driving a two qubit system to a stable long-lived entanglement is discussed. The entire system is represented by two atoms, initially in ground states and disentangled, each one coupled to a separate cavity with the cavities connected by a fiber. The cavities and fiber exchange energy with their individual thermal environments. Under these conditions, we apply the theory of microscopic master equation developed for the dynamics of the open quantum system. Deriving the density operator of the two-qubit system we found that stable long-lived quantum correlations are generated in the presence of thermal excitation of the environments. To the best of our knowledge, there is no a similar effect observed in a quantum open system described by a generalized microscopic master equation in the approximation of the cavity quantum electrodynamics (CQED).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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