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| Bipartite Entanglement in the Two-Mode Quantum Kicked Top | |
| 引用本文： | 宋立军 王晓光 李永大 宗占国. Bipartite Entanglement in the Two-Mode Quantum Kicked Top[J]. 中国物理快报, 2006, 23(12): 3190-3193 |
| 作者姓名： | 宋立军 王晓光 李永大 宗占国 |
| 作者单位： | [1]Institute of Aoolied Phvsics,Changchun University, Changchun 130022 [2]Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 310027 [3]School of Science, Changchun University of Science and Technology, Changchun 130022 |
| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10405019, the Specialized Research Fund for the Doctoral Programme of Higher Education （SRFDP） of China under Grant No 20050335087, and the Project-sponsored by SRF for R0CS, SEM. |
| 摘 要： | We show that the bipartite entanglement in the two-mode quantum kicked top can reveal the underlying chaotic and regular structures in phase space： namely, the entanglement displays a rapid rise after a very short time for an initial spin coherent state centred in a chaotic region of the phase space, whereas the entanglement displays a periodic modulation for the coherent state centred at an elliptic fixed point. The quantum-classical correspondence is investigated by studying the mean and maximal linear entropy. |
| 关 键 词： | 双粒子纠缠 相空间 平均线性熵 最大线性熵 双模量子反冲顶点 自旋相干态 |
| 收稿时间： | 2006-07-24 |
| 修稿时间： | 2006-07-24 |
Bipartite Entanglement in the Two-Mode Quantum Kicked Top |
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| SONG Li-Jun,WANG Xiao-Guang,LI Yong-Da,ZONG Zhan-Guo. Bipartite Entanglement in the Two-Mode Quantum Kicked Top[J]. Chinese Physics Letters, 2006, 23(12): 3190-3193 | |
| Authors: | SONG Li-Jun WANG Xiao-Guang LI Yong-Da ZONG Zhan-Guo |
| Affiliation: | 1.Institute of Applied Physics, Changchun University, Changchun 130022;2.Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 310027;3.School of Science, Changchun University of Science and Technology, Changchun 130022 |
| Abstract: | We show that the bipartite entanglement in the two-mode quantum kicked top can reveal the underlying chaotic and regular structures in phase space: namely, the entanglement displays a rapid rise after a very short time for an initial spin coherent state centred in a chaotic region of the phase space, whereas the entanglement displays a periodic modulation for the coherent state centred at an elliptic fixed point. The quantum--classical correspondence is investigated by studying the mean and maximal linear entropy. |
| Keywords: | 05.45.Mt 03.65.Ud 42.50.Dv |
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