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arXiv 1503.09051quant-ph
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有限谐波链上的量子关联和能流

Quantum correlations and energy currents across finite harmonic chains

Antonio A. Valido, Antonia Ruiz, Daniel Alonso

摘要:

我们提出了一个研究,解决了在一个三模链受到欧姆和super-Ohmic dissipations的能量流和量子关联的平稳特性。大量的数值分析表明,能流的平均值和涨落对各种各样的量子关联的出现不敏感,如双模不和谐和纠缠、二分三模和真正的三分纠缠。数值结果的讨论是基于导出的表达式的平稳性质的两个时间关联函数的振子运营商,其中携带量子关联。有趣的是,我们表明,量子不和谐可以通过考虑初始压缩热浴态和施加温度梯度来增强。

英文摘要:

We present a study that addresses both the stationary properties of the energy current and quantum correlations in a three-mode chain subjected to Ohmic and super-Ohmic dissipa- tions. An extensive numerical analysis shows that the mean value and the fluctuations of the energy current remain insensitive to the emergence of a rich variety of quantum correlations: such as, two-mode discord and entanglement, bipartite three-mode and genuine tripartite entanglement. The discussion of the numerical results is based on the derived expressions for the stationary properties in terms of the two-time correlation functions of the oscillator operators, which carry quantum correlations. Interestingly, we show that quantum discord can be enhanced by both considering initially squeezed thermal bath states and imposing temperature gradients.

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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