Bipartite Entanglement in the Two-Mode Quantum Kicked Top
SONG Li-Jun1,3,WANG Xiao-Guang2, LI Yong-Da3, ZONG Zhan-Guo1
¹Institute of Applied Physics, Changchun University, Changchun 130022
²Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 310027
³School of Science, Changchun University of Science and Technology, Changchun 130022
Bipartite Entanglement in the Two-Mode Quantum Kicked Top
SONG Li-Jun1,3,WANG Xiao-Guang2;LI Yong-Da3;ZONG Zhan-Guo1
¹Institute of Applied Physics, Changchun University, Changchun 130022
²Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hangzhou 310027
³School 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.
SONG Li-Jun;WANG Xiao-Guang;LI Yong-Da;ZONG Zhan-Guo. Bipartite Entanglement in the Two-Mode Quantum Kicked Top[J]. 中国物理快报, 2006, 23(12): 3190-3193.
SONG Li-Jun, WANG Xiao-Guang, LI Yong-Da, ZONG Zhan-Guo. Bipartite Entanglement in the Two-Mode Quantum Kicked Top. Chin. Phys. Lett., 2006, 23(12): 3190-3193.
2006, Vol. 23 
