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arXiv 2007.11382quant-ph
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相位弛豫中的可控非马尔可夫性

Controllable non-Markovianity in phase relaxation

Shingo Kukita, Yasushi Kondo, Mikio Nakahara

摘要:

最近,量子技术取得了显著的进展。鉴于此,重要的是研究一个开放量子系统作为这种量子器件的模型。量子器件通常需要极端的条件,例如非常低的温度才能使器件工作。在这种情况下,动力学可以是非马尔可夫的,而在高温状态下则是马尔可夫动力学。这一发现使我们有必要从理论和实验两方面研究一个非马尔可夫开放量子系统。本文报道了两个重要结果:1)一个简单但非平凡的理论模型的精确解; 2)通过NMR实验证明了该模型,其中非马尔可夫性是连续可控的。我们观察到理论和实验之间的定性协议。

英文摘要:

Recently remarkable progress in quantum technology has been witnessed. In view of this it is important to investigate an open quantum system as a model of such quantum devices. Quantum devices often require extreme conditions such as very low temperature for the devices to operate. Dynamics can be non-Markovian in such a situation in contrast with Markovian dynamics in high temperature regime. This observation necessitates us to investigate a non-Markovian open quantum system, both theoretically and experimentally. In this paper, we report two important results: 1) Exact solution of a simple but non-trivial theoretical model and 2) demonstration of this model by NMR experiments, where non-Markovianity is continuously controllable. We observe qualitative agreement between theory and experiment.

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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