Steered quantum coherence and quantum Fisher information in spin-chain system

被引：1

作者：

Ye, Biao-Liang ^{[1
]}

Wang, Yao-Kun ^{[2
]}

Fei, Shao-Ming ^{[3
,4
]}

机构：

[1] Shangrao Normal Univ, Quantum Informat Res Ctr, Shangrao 334001, Peoples R China

[2] Tonghua Normal Univ, Coll Math, Tonghua 134001, Jilin, Peoples R China

[3] Capital Normal Univ, Sch Math Sci, Beijing 100048, Peoples R China

[4] Max Planck Inst Math Sci, D-04103 Leipzig, Germany

来源：

RESULTS IN PHYSICS | 2023年 / 54卷

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

l1 norm of steered coherence; Relative entropy of steered coherence; Quantum Fisher information; Spin-chain system; STATISTICAL-MECHANICS; XY-MODEL; DISCORD; STATE;

D O I：

10.1016/j.rinp.2023.107095

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, we investigate steered quantum coherence, i.e., the 11 norm of steered coherence and the relative entropy of steered coherence, and the quantum Fisher information in the Gibbs state of two-qubit XXZ systems. Their variations with respect to the temperature, external magnetic field, and interaction intensities are analyzed both analytically and numerically in detail. The similar behaviors among these three quantum measures in the XXZ model are presented.

引用

页数：7

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