Thermal Entanglement in a Two-Qubit Ising Chain Subjected to Dzyaloshinsky–Moriya Interaction  

作　　者：B.G.Divyamani Sudha 

机构地区：[1]Department of Physics,Kuvempu University,Shankaraghatta,Shimoga-577451,India [2]Tunga Mahavidyalaya,Tirthahalli,Shimoga-577451,India [3]Inspire Institute Inc.,Alexandria,Virginia,22303,USA

出　　处：《Chinese Physics Letters》2013年第12期5-8,共4页中国物理快报（英文版）

摘　　要：Thermal entanglement of a two-qubit Ising chain subjected to an external magnetic field and Dzyaloshinsky–Moriya(DM)interaction is examined.The effect of magnetic field,strength of DM interaction and temperature are analyzed by adopting negativity of partial transpose as the measure of entanglement.It is shown that when the DM interaction along the Ising axis is considerable,thermal entanglement can be sustained for a higher temperature.The usefulness of longitudinal DM interaction over the one that is perpendicular to the Ising axis,in the manipulation and control of entanglement at a feasible temperature,is illustrated.

关 键 词：TEMPERATURE ISING INTERACTION 

分 类 号：O41[理学—理论物理]