使用局部最优通用非对称克隆器获得的量子关联分析。

Analysis of Quantum Correlations Obtained Using Local Optimal Universal Asymmetric Cloners.

作者信息

Cîrneci Cătălina, Ghiu Iulia

机构信息

Faculty of Physics, University of Bucharest, 405 Str. Atomistilor, 077125 Magurele, Romania.

Research Institute of the University of Bucharest (ICUB), 90-92 Sos. Panduri, 5th District, 050657 Bucharest, Romania.

出版信息

Entropy (Basel). 2022 Dec 23;25(1):29. doi: 10.3390/e25010029.

DOI:10.3390/e25010029

PMID:36673170

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9857443/

Abstract

We apply the local optimal universal asymmetric cloning machine on an initially pure entangled state of two qubits. As output, we obtain two final states which present quantum correlations. We analyze three types of quantum correlations among the final states, namely, concurrence, quantum discord, and consonance. A detailed comparison between concurrence, quantum discord, and consonance is made, and we find that consonance is greater than quantum discord, which is in turn greater than concurrence.

摘要

我们将局部最优通用非对称克隆机应用于两个量子比特的初始纯纠缠态。作为输出，我们得到两个呈现量子关联的最终态。我们分析了最终态之间的三种量子关联类型，即并发度、量子失协和谐振。对并发度、量子失协和谐振进行了详细比较，我们发现谐振大于量子失协，而量子失协又大于并发度。