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Disentanglement of Two Qubits Coupled to an XY Spin Chain at Finite Temperature
  • ISSN号：0253-6102
  • 期刊名称：COMMUNICATIONS IN THEORETICAL PHYSICS
  • 时间：0
  • 页码：815-819
  • 语言：中文
  • 分类：O413[理学—理论物理;理学—物理] O413.1[理学—理论物理;理学—物理]
  • 作者机构：[1]School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
  • 相关基金：The project supported by National Natural Science Foundation of China under Grant Nos. 60578014 and 10775023
  • 相关项目：特殊环境诱导纠缠和退相干的理论研究
作者： Yi Xue-Xi|Wang Lin-Cheng|Nie Jing|
关键词： 自旋链, 量子位, 有限温度, 耦合, 自由空间, 初始状态, 临界现象, 热效应, disentanglement, quantum phase transition, XY spin chain
中文摘要：

在非零温度在横向的领域里联合到普通包围 XY 链的由两部组成的 spin-1/2system 的解开纠结进化在这封信被学习。纠纷的动态过程是数字地并且调查的经分解。如果中央旋转的纠缠的起始的状态不在 decoherence 空间做，我们发现热效果能提高解开纠结。在解开纠结反映的量阶段转变的批评现象能被热效果最后外面洗。

英文摘要：

The disentanglement evolution of bipartite spin-1/2 system coupled to a common surrounding XY chain in transverse fields at nonzero temperature is studied in this letter. The dynamical process of the entanglement is numerically and analytically investigated. We find that thermal effects can enhance disentanglement if the entangled initial state of the central spins does not in the decoherence free space. The critical phenomenon of quantum phase transitions reflected in the disentanglement can be washed out by the thermal effect eventually.

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期刊信息
  • 《理论物理通讯：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中科院理论物理所 中国物理学会
  • 主编：孙昌浦
  • 地址：北京2735邮政信箱 中国科学院理论物理研究所编辑部
  • 邮编：100190
  • 邮箱：ctp@itp.ac.cn
  • 电话：010-62551495 62541813 62550630
  • 国际标准刊号：ISSN：0253-6102
  • 国内统一刊号：ISSN：11-2592/O3
  • 邮发代号:
  • 获奖情况:
  • 首届国家期刊奖,中国科学院优秀期刊特别奖,国家期刊奖百种重点期刊,中国期刊方阵“双高”期刊
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  • 被引量:342