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Entanglement Evolution of Two-Coupled Spins in a Time-Dependent Rotating Magnetic Field
  • ISSN号：0253-6102
  • 期刊名称：COMMUNICATIONS IN THEORETICAL PHYSICS
  • 时间：0
  • 页码：883-888
  • 语言：中文
  • 分类：O411[理学—理论物理;理学—物理]
  • 作者机构：[1]四川大学原子分子物理研究所,成都610065
  • 相关基金：国家自然科学基金（10374068）;教育部博士点基金（20050610011）
  • 相关项目：单分子磁体电磁结构与磁量子隧穿现象理论研究
作者： Zhang Shi-Xun|Kuang Xiao-Yu|Zhu Qin-Sheng|
关键词： 纠缠演化, 代数动力学, 非自治系统, entanglement evolution,algebraic dynamics,non-autonomouse system
中文摘要：

我们研究了含时旋转磁场中海森堡XXX模型下的双量子比特的动力学演化情况.基于此非自治系统的代数结构,我们用代数动力学方法求得了系统的精确解析解.在此基础上,进一步研究了在不同初态下系统的纠缠测度随时间的演化,发现纠缠测度由系统的初态的系数和耦合强度决定.

英文摘要：

We study the dynamics evolution of a two-qubit Heisenberg XXX spin chain under a time-dependent rotating magnetic field.Based on the algebraic structure of the non-autonomouse system,the exact solution of the Schrdinger equation is obtained by using the method of algebraic dynamics.Based on the time-dependent analytical solution,we further study the entanglement evolution between the two coupled spins for different initial states,and find that the entanglement is determined by the coefficients of the initial state and the coupling constant J of the system.

同期刊论文项目
分子合金磁滞自旋转换理论研究
期刊论文 45 会议论文 1
单分子磁体电磁结构与磁量子隧穿现象理论研究
期刊论文 71
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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