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arXiv 2108.01669quant-phmath-phmath.MP
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含时量子发生器控制的纠缠动力学

Entanglement dynamics governed by time-dependent quantum generators

Artur Czerwinski

摘要:

在这篇文章中,我们研究了由含时线性发生器定义的纠缠动力学。我们考虑耦合到环境中的多能级量子系统,诱导退相干和耗散,使得弛豫速率依赖于时间。通过应用部分交换性条件,可以精确地描述所选子系统的动态特性。更具体地说,我们研究纠缠态的动力学。在时域中,并发度被用来量化两量子比特纠缠的量。该框架似乎是一个有效的工具,研究纠缠态的时间局域生成驱动的量子演化。特别是,可以包括非马尔可夫效应来观察时间纠缠的恢复。

英文摘要:

In the article, we investigate entanglement dynamics defined by time-dependent linear generators. We consider multilevel quantum systems coupled to an environment that induces decoherence and dissipation, such that the relaxation rates depend on time. By applying the condition of partial commutativity, one can precisely describe the dynamics of selected subsystems. More specifically, we investigate the dynamics of entangled states. The concurrence is used to quantify the amount of two-qubit entanglement in the time domain. The framework appears an efficient tool for investigating quantum evolution of entangled states driven by time-local generators. In particular, non-Markovian effects can be included to observe the restoration of entanglement in time.

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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