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arXiv 1701.02100quant-ph
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量子耗散系统中的量子芝诺和反芝诺效应

Quantum Zeno and anti-Zeno effects in quantum dissipative systems

Wei Wu, Hai-Qing Lin

摘要:

我们研究了量子耗散系统中的量子芝诺和反芝诺效应,采用分层运动方程的方法,这是超越通常的马尔可夫近似,旋转波近似,微扰近似。作为说明性的例子,提供了一个有偏量子位玻色子模型和一个有偏量子玻色子模型的量子芝诺和反芝诺动力学。研究发现:(i)存在多重Zeno-anti-Zeno交叉现象;(ii)熔池的非马尔可夫特性可能有利于Zeno动力学的可达性;(iii)高熔池温度可能增加量子耗散系统中观察量子Zeno效应的难度。

英文摘要:

We investigate the quantum Zeno and anti-Zeno effects in quantum dissipative systems by employing a hierarchical equations of motion approach which is beyond the usual Markovian approximation, the rotating wave approximation, and the perturbative approximation. The quantum Zeno and anti-Zeno dynamics of a biased qubit-boson model and a biased qutrit-boson model are provided as illustrative examples. It is found that (i) there exists multiple Zeno-anti-Zeno crossover phenomena, (ii) the non-Markovian characteristic of the bath may be favorable for the accessibility of the Zeno dynamics, and (iii) high bath temperature may add the difficulty in observing the quantum Zeno effect in quantum dissipative systems.

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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