Protecting quantum correlations of the XXZ model by topological boundary conditions

doi:10.1038/s41598-018-37474-x

	Protecting quantum correlations of the XXZ model by topological boundary conditions
	Hu, Ming-Liang 3; Liu, Si-Yuan 4,5,7; Wang, Xiao-Hui 5,6; Zhou, Xu 6,7; Shi, Hai-Long 1,2,6,7; Zeng, Shi-Ping 6,7
刊名	SCIENTIFIC REPORTS
	2019-01-31
卷号	9 页码:8
ISSN号	2045-2322
DOI	10.1038/s41598-018-37474-x
英文摘要	The differences between the XXZ model with topological and periodical boundary conditions were compared by studying their entanglement, quantum discord, and critical temperature above which the entanglement vanishes. It shows that the different boundary conditions mainly affect bipartite quantum correlations of the boundary spins rather than that of other spin pairs. The topological boundary spins can protect entanglement and discord against strong magnetic fields while the periodical boundary spins can protect them against nonuniform magnetic fields. Compared with the periodical XXZ model, the critical temperature is significantly improved for the topological XXZ model. The topological XXZ model also allows us to improve significantly its critical temperature by increasing the strength of magnetic field, which is not feasible for the periodical XXZ model. It is therefore more promising for preparing entangled states at high temperature in the topological XXZ model.
资助项目	NSFC[11675129] ; NSFC[11475135] ; NSFC[11847306] ; NSFC[11705146] ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province[2017KCT-12] ; Major Basic Research Program of Natural Science of Shaanxi Province[2017ZDJC-32] ; Double First-Class University Construction Project of Northwest University ; New Star Project of Science and Technology of Shaanxi Province[2016KJXX-27] ; New Star Team of XUPT
WOS关键词	ENTANGLEMENT ; STATE
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000457287000071
资助机构	NSFC ; NSFC ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Double First-Class University Construction Project of Northwest University ; Double First-Class University Construction Project of Northwest University ; New Star Project of Science and Technology of Shaanxi Province ; New Star Project of Science and Technology of Shaanxi Province ; New Star Team of XUPT ; New Star Team of XUPT ; NSFC ; NSFC ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Double First-Class University Construction Project of Northwest University ; Double First-Class University Construction Project of Northwest University ; New Star Project of Science and Technology of Shaanxi Province ; New Star Project of Science and Technology of Shaanxi Province ; New Star Team of XUPT ; New Star Team of XUPT ; NSFC ; NSFC ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Double First-Class University Construction Project of Northwest University ; Double First-Class University Construction Project of Northwest University ; New Star Project of Science and Technology of Shaanxi Province ; New Star Project of Science and Technology of Shaanxi Province ; New Star Team of XUPT ; New Star Team of XUPT ; NSFC ; NSFC ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Key Innovative Research Team of Quantum Many-body theory and Quantum Control in Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Major Basic Research Program of Natural Science of Shaanxi Province ; Double First-Class University Construction Project of Northwest University ; Double First-Class University Construction Project of Northwest University ; New Star Project of Science and Technology of Shaanxi Province ; New Star Project of Science and Technology of Shaanxi Province ; New Star Team of XUPT ; New Star Team of XUPT
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/14384]
专题	中国科学院武汉物理与数学研究所
通讯作者	Wang, Xiao-Hui
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China 3.Xian Univ Posts & Telecommun, Sch Sci, Xian 710121, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 5.Shaanxi Key Lab Theoret Phys Frontiers, Xian 710127, Shaanxi, Peoples R China 6.Northwest Univ, Sch Phys, Xian 710127, Shaanxi, Peoples R China 7.Northwest Univ, Inst Modern Phys, Xian 710127, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Hu, Ming-Liang,Liu, Si-Yuan,Wang, Xiao-Hui,et al. Protecting quantum correlations of the XXZ model by topological boundary conditions[J]. SCIENTIFIC REPORTS,2019,9:8.
APA	Hu, Ming-Liang,Liu, Si-Yuan,Wang, Xiao-Hui,Zhou, Xu,Shi, Hai-Long,&Zeng, Shi-Ping.(2019).Protecting quantum correlations of the XXZ model by topological boundary conditions.SCIENTIFIC REPORTS,9,8.
MLA	Hu, Ming-Liang,et al."Protecting quantum correlations of the XXZ model by topological boundary conditions".SCIENTIFIC REPORTS 9(2019):8.