The tightness of the measure-based method to estimate quantum coherence

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-16 DOI:10.1088/1612-202x/ad485a

Zimeng Zhang, Yongming Li and Yu Luo

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引用次数: 0

Abstract

With the advancement of quantum information science, the understanding of quantum coherence has become increasingly important. In this paper, we investigate the effects of different channels on quantum states and analyze the evolution process of quantum states during channel transmission. Our findings reveal variations in the impact of different channels on quantum coherence. Additionally, we explore the estimation of lower bounds on coherence after passing through these diverse channels. We observe that channel transmission has a certain influence on the tightness of lower bounds on quantum coherence. We conduct a detailed analysis of this influence and propose improvement method to enhance the tightness of the lower bound estimation. Based on our research results, we draw conclusions that unveil the characteristics of quantum coherence under different channel conditions. Furthermore, we provide an effective estimation method and improvement strategies to accurately assess the coherence of quantum states. This research holds significant implications for further advancements in quantum information processing and quantum communication.

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基于度量的量子相干性估算方法的严密性

随着量子信息科学的发展，对量子相干性的理解变得越来越重要。本文研究了不同信道对量子态的影响，并分析了信道传输过程中量子态的演化过程。我们的研究结果揭示了不同信道对量子相干性影响的差异。此外，我们还探索了通过这些不同信道后相干性下限的估计。我们观察到，信道传输对量子相干性下限的严密性有一定影响。我们对这种影响进行了详细分析，并提出了提高下界估计紧密性的改进方法。基于我们的研究成果，我们得出了揭示不同信道条件下量子相干性特征的结论。此外，我们还提供了有效的估计方法和改进策略，以准确评估量子态的相干性。这项研究对进一步推动量子信息处理和量子通信具有重要意义。

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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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.