近日，延边大学的金元峰及其研究团队取得一项新进展。经过不懈努力，他们对热力学角度的真正多体纠缠进行研究。相关研究成果已于2024年4月22日在国际知名学术期刊《物理评论A》上发表。

本文提出了任意纯态的唯一真正分解定理，并深入探讨了电池容量差距与各向同性差距之间的关联。借助多体系统的电池容量，研究人员引入一个向量值真正测度，并与其他现有测度进行了细致比较。结果表明，该测度在判断两个多体纯态之间是否禁止确定性LOCC变换方面，表现优于部分现有测度。

研究人员通过适当的构造，可以推导出许多GME测度。此外，他们通过凸顶扩展给出了二元电池容量差距相对于混合状态的显式表达式，并研究了与电池容量差距相关的一些一夫一妻关系。

据悉，在各种类型的量子纠缠中，最令人着迷和感兴趣的无疑是真正纠缠。

附：英文原文

Title: Genuine multipartite entanglement from a thermodynamic perspective

Author: Wenlong Sun, Yuanfeng Jin, Gang Lu

Issue&Volume: 2024/04/22

Abstract: Among the various types of quantum entanglement, the most fascinating and interesting one is genuine entanglement undoubtedly. In this paper, the unique genuine decomposition theorem with respect to any pure state is given and the relations between battery capacity gap and ergtropic gap are studied. By exploiting the battery capacity of multipartite systems, we introduce a vector-valued genuine measure compared with other existing measures and find that the one is superior to some other existing measures in confirming whether the deterministic LOCC transformation between two multipartite pure states is prohibited. Through some proper constructions, one can derive many GME measures. We also give the explicit expression of bipartite battery capacity gap with respect to mixed states by the convex roof extension and investigate some monogamy relations related to the battery capacity gap.

DOI: 10.1103/PhysRevA.109.042422

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.109.042422