Quantum entanglement investigation on impurity effects in the transverse Ising chain
Huang, XC (Huang, Xuchu)1; Si, TY (Si, Tieyan)1; Yang, ZH (Yang, Zhihua)1
2015
Source PublicationPHYSICA B-CONDENSED MATTER
ISSN0921-4526
Volume462Issue:4Pages:25-29
Abstract

The impurity effects of the transverse Ising spin model with a magnetic impurity are investigated via the correlation function and entanglement on the basis of an exact solution. The non-analytical transition point from an ordered phase to a disorder phase is significantly shifted by the impurity coupling with local host spins. The maximal entanglement point which usually appears around the critical point shows strong dependence on the impurity coupling strength with local host spin and the independent transverse field upon the impurity itself. Quantum entanglement in disordered spin phase is much stronger than that in ordered spin phase. The exact concurrence of impurity spin with local host spin suddenly increases to a large value from zero at a threshold value. The maximal entanglement point between impurity and local host spin increases as the impurity coupling strength increases. So the impurity coupling strength and local transverse field on the impurity can control position of critical point and maximal entanglement point.

KeywordImpurity Effect Quantum Entanglement Correlation Function Concurrence
DOI10.1016/j.physb.2015.01.007
Indexed BySCI
Language英语
WOS IDWOS:000350812000005
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Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/4898
Collection中国科学院特殊环境功能材料与器件重点试验室
材料物理与化学研究室
Corresponding AuthorYang, ZH (Yang, Zhihua)
Affiliation1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Harbin Inst Technol, Harbin 150001, Peoples R China
Recommended Citation
GB/T 7714
Huang, XC ,Si, TY ,Yang, ZH . Quantum entanglement investigation on impurity effects in the transverse Ising chain[J]. PHYSICA B-CONDENSED MATTER,2015,462(4):25-29.
APA Huang, XC ,Si, TY ,&Yang, ZH .(2015).Quantum entanglement investigation on impurity effects in the transverse Ising chain.PHYSICA B-CONDENSED MATTER,462(4),25-29.
MLA Huang, XC ,et al."Quantum entanglement investigation on impurity effects in the transverse Ising chain".PHYSICA B-CONDENSED MATTER 462.4(2015):25-29.
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