量子Dicke模型中的纠缠动力学性质

量子Dicke模型中的纠缠动力学性质

王永超¹,², 朱红波², 宋立军³, 盖永杰³,⁴

1. 北华大学物理学院, 吉林吉林 132013; 2. 东北师范大学物理学院, 长春 130024;3. 长春大学应用物理研究所, 长春 130022; 4. 长春理工大学理学院, 长春 130022

收稿日期:2007-12-28 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26
通讯作者: 朱红波

Dynamic Properties of Entanglement in Quantum Dicke Model

WANG Yongchao¹,², ZHU Hongbo², SONG Lijun³, GAI Yongjie³,⁴

1. College of Science, Beihua University, Jilin 132013, Jilin Province, China;2. School of Physics, Northeast Normal University, Changchun 130024, China;3. Institute of Applied Physics, Changchun University, Changchun 130022, China;4. School of Science, Changchun University of Science and Technology, Changchun 130022, China

Received:2007-12-28 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
Contact: ZHU Hongbo

摘要/Abstract

摘要： 在经典极限条件下, 量子化的Dicke模型表现为量子混沌动力学特征. 通过数值计算, 考察Dicke模型在旋转波近似和非旋转波近似条件下, 与经典相空间对应的一些特殊点的初始条件对纠缠的影响, 并将所有点作为初始条件相空间整体纠缠动力学的演化特征, 研究表明, 经典混沌促进了纠缠的发生. 

关键词: 量子混沌, 非旋转波近似, 纠缠动力学

Abstract: Under the condition of classical limit, quantized Dicke model shows the dynamical behavior of quantum chaos. The numerical calculation shows that there are some particular points in the classical phasespace at which the quantum chaos is present. The impact of initial conditions of these particular positions on entanglement of the model was analyzed respectively under RWA (rotatingwave approximation) or nonRWA. The evolutionary characteristics of the overall dynamics were studied in the phasespace for all the phase points considered to be under the initial condition. The conclusion obtained is that classical chaos will accelerate the generation of entanglement.

Key words: quantum chaos, non-rotating-wave approximation, entanglement dynamics

中图分类号:

O422

王永超,, 朱红波, 宋立军, 盖永杰,. 量子Dicke模型中的纠缠动力学性质[J]. J4, 2008, 46(05): 951-955.

WANG Yongchao,, ZHU Hongbo, SONG Lijun, GAI Yongjie,. Dynamic Properties of Entanglement in Quantum Dicke Model[J]. J4, 2008, 46(05): 951-955.

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