%0 Journal Article
%T 三比特铁磁质海森堡自旋链模型的热纠缠<br>Entanglement in a three-qubit Ferrmagnetic Heisenberg Spin Chain System
%A 郗玉兴
%A 赵媛丽
%A 黄燕霞
%J 原子与分子物理学报
%D 2016
%X 本文对带DM相互作用的铁磁质海森堡XXZ自旋链模型在磁场中的热纠缠进行了详细地计算和分析. 通过画图发现铁磁质模型的热纠缠远大于反铁磁质模型的热纠缠. 同时发现外磁场 ,耦合系数 和DM相互作用 都可以有效地控制纠缠和临界温度 . 该结论为实验上利用海森堡XXZ模型的纠缠特性进行隐形传态提供了很好的理论依据.<br>In this paper ,we study entanglement of a three-qubit ferromagnetic Heisenberg XXZ chain with Dzyaloshinskii-Moriya interaction and obtain the expression for concurrence, which is a function of DM interaction parameter , the coupling coefficient , external magnetic and temperature . It is found that these parameters not only control the entanglement, but also enhance the critical temperature . What’s more, we find the ferromagnetic model has a higher entanglement than antiferromagnetic model. The result could provide theoretical basis for later experiment.
%K 自旋链
%K 热纠缠
%K DM相互作用&lt
%K br&gt
%K Heisenberg spin chain
%K thermal entanglement
%K DM interaction
%U http://jamp.ijournals.cn/jamp/ch/reader/view_abstract.aspx?file_no=15149&flag=1