中国物理B ›› 2015, Vol. 24 ›› Issue (11): 110305-110305.doi: 10.1088/1674-1056/24/11/110305
封玲娟a, 张英杰a b, 张路a, 夏云杰a
Feng Ling-Juan (封玲娟)a, Zhang Ying-Jie (张英杰)a b, Zhang Lu (张路)a, Xia Yun-Jie (夏云杰)a
摘要: We investigate the tripartite entanglement dynamics of three two-level atoms in a multi-mode vacuum field. By considering the influences of the interatomic distance and the initial condition on the lower bound of concurrence and the tripartite negativity, we show that an optimal interatomic distance can be found to minimize the collective damping. Interestingly, at the same optimal distance, the tripartite entanglement would be maximized in the open dynamics process. In the case of shorter interatomic distance, the tripartite entanglement can display the oscillatory behavior in the initial short-time limit and be trapped in a stationary value in the long-time limit. In addition, the tripartite entanglement for the general situation with different interatomic distances is also discussed.
中图分类号: (Quantum information)