Steered Quantum Coherence as a Signature of Topological Quantum Phase Transitions in the Extended XY Model

被引：2

作者：

Du, Ming-Ming ^{[1
,2
]}

Gu, Shi-Pu ^{[1
,2
]}

Zhong, Wei ^{[4
]}

Yan, Xiao-Jing ^{[3
]}

Zhou, Lan ^{[3
]}

Sheng, Yu-Bo ^{[1
,2
,4
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Coll Flexible Elect Future Technol, Nanjing 210023, Peoples R China

[3] Nanjing Univ Posts & Telecommun, Sch Sci, Nanjing 210023, Peoples R China

[4] Nanjing Univ Posts & Telecommun, Inst Quantum Informat & Technol, Nanjing 210003, Peoples R China

来源：

ANNALEN DER PHYSIK | 2023年 / 535卷 / 08期

关键词：

quantum coherence; quantum correlations; topological quantum phase transitions; INFORMATION;

D O I：

10.1002/andp.202300121

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In recent years, there has been a surge of interest in exploring coherence measures and correlation measures to characterize topological quantum phase transitions (TQPTs). Here, motivated by the continued push in this direction, the steered quantum coherence (SQC) in the extended XY model is studied to analyze its capability in characterizing TQPTs. It is shown that the first derivative of SQC succeeds in signaling different critical points of TQPTs. In particular, it is found that the SQC is a long-range correlation and the first derivative of SQC can always accurately identify TQPTs for different site distance.

引用

页数：7

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