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arXiv 2112.04430quant-ph
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无纠缠非局域性系综的相干性度量

Coherence measure of ensembles with nonlocality without entanglement

Ayan Patra, Shiladitya Mal, Aditi Sen De

AI总结:

本文提出基于$l_1$相干范数的度量来定量评估正交乘积态系综的量子性,并建立该度量与LOCC下最小误差态区分最优成功概率的关系,以构建不同乘积系综间的层级。

摘要:

制备与区分过程之间的不可逆性,体现在通过局域操作与经典通信(LOCC)无法区分正交乘积态这一现象中。根据态的局域区分性质来刻画态集合的量子特性,是解释LOCC不可区分性领域中所获惊人结果的途径之一。我们提出一种基于$l_1$相干范数的度量,用以定量评估由正交乘积态组成的系综的量子性。此外,为了在不同乘积系综之间建立层级关系,我们在最小误差态区分的框架下,建立了系综的相干性度量与使用LOCC区分系综内态的最优成功概率之间的联系,其中LOCC受限于有限的经典通信和投影测量。

英文摘要:

Irreversibility between preparation and discrimination processes is manifested in the indistinguishability of orthogonal product states via local operations and classical communication (LOCC). Characterizing quantum properties for sets of states according to their local distinguishing property is one of the avenues to explain the surprising results obtained in the LOCC indistinguishability domain. We propose a measure based on the $l_1$ norm of coherence to quantitatively assess the quantumness of ensembles composed of orthogonal product states. Furthermore, to establish a hierarchy among different product ensembles, we establish a relationship between the coherence-based measure of an ensemble and the optimal success probability of distinguishing states within the ensemble using LOCC, constrained by a limited amount of classical communication and projective measurements, in the framework of minimum error state discrimination.

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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