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arXiv 2006.10686quant-ph
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通过滤波操作控制么正映射的量子速度极限时间

Controlling the quantum speed limit time for unital maps via filtering operations

S. Haseli

摘要:

一个系统从一个初始状态到一个最终正交状态所需要的最小时间被称为量子速度极限时间。量子限速时间可以用来量化量子演化的速度。量子演化的速度随着量子速度极限时间的减小而增加。在这项工作中,我们将使用基于相对纯度的量子速度限制时间的界限。它适用于任意初始状态。在这里,我们研究了滤波操作对量子限速时间的影响。将观察到,对于滤波操作参数的某些间隔,量子速度极限时间通过增加滤波操作参数而减小,并且对于某些其它间隔,量子速度极限时间通过减小滤波操作参数而减小。

英文摘要:

The minimum time a system needs to change from an initial state to a final orthogonal state is called quantum speed limit time. Quantum speed limit time can be used to quantify the speed of the quantum evolution. The speed of the quantum evolution will increase, if the quantum speed limit time decreases. In this work we will use relative purity based bound for quantum speed limit time. It is applicable for any arbitrary initial state. Here, we investigate the effects of filtering operation on quantum speed limit time. It will be observed that for some intervals of filtering operation parameter the quantum speed limit time is decreased by increasing filtering operation parameter and for some other intervals it is decreased by decreasing filtering operation parameter.

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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