Non-Markovian dynamics of entanglement for multipartite systems

作者：Zhou Jiang; Wu Chengjun; Zhu Mingyi; Guo Hong^*

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2009, 42(21): 215505.

DOI：10.1088/0953-4075/42/21/215505

Entanglement dynamics for a couple of two-level atoms interacting with independent structured reservoirs is studied using a non-perturbative approach. It is shown that the revival of atom entanglement is not necessarily accompanied by the sudden death of reservoir entanglement, and vice versa. In fact, atom entanglement can revive before, simultaneously or even after the disentanglement of reservoirs. Using a novel method based on the population analysis for the excited atomic state, we present the quantitative criteria for the revival and death phenomena. To give a more physically intuitive insight, the quasimode Hamiltonian method is applied. Our quantitative analysis is helpful for the practical engineering of entanglement.

• 出版日期2009-11-14
• 单位北京大学