退相干条件下受控量子态与目标态之间的距离约束

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-25 DOI:10.1088/2399-6528/ad1f74

Kohei Kobayashi

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引用次数: 0

摘要

要实现量子信息技术，精心设计用于制备所需状态的控制方法起着关键作用。然而，在现实情况中，这些方法的实际性能受到退相干性的严重限制。因此，评估在退相干情况下，我们能将受控状态引导到多接近所需的目标状态非常重要。在本文中，我们提供了存在和不存在退相干情况下两个受控量子系统之间距离的上限。该界限量化了在退相干情况下特定目标态的控制实现程度，无需求解任何方程即可直接计算。此外，该上限还可用于推导在退相干情况下获得目标状态的概率的理论极限。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Bound on the distance between controlled quantum state and target state under decoherence

To implement quantum information technologies, carefully designed control for preparing a desired state plays a key role. However, in realistic situation, the actual performance of those methodologies is severely limited by decoherence. Therefore, it is important to evaluate how close we can steer the controlled state to a desired target state under decoherence. In this paper, we provide an upper bound of the distance between the two controlled quantum systems in the presence and absence of decoherence. The bound quantifies the degree of achievement of the control for a given target state under decoherence, and can be straightforwardly calculated without solving any equation. Moreover, the upper bound is applied to derive a theoretical limit of the probability for obtaining the target state under decoherence.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.