中文摘要：

研究了由两个二能级原子与一个零温热库所组成的系统的纠缠动力学过程。考虑原子间的偶偶相互作用及原子与热库之间的失谐,对于初始原子间有纠缠与无纠缠两种情况,研究了不同的参数条件对系统纠缠的影响。计算了两原子间、原子与热库之间的对纠缠以及整个系统的三体纠缠,结果表明在两原子初始处于最大纠缠态时,所有的对纠缠最终都趋于零。增大原子间的偶偶相互作用强度,原子与热库之间的纠缠会被减弱,而原子间的纠缠以及系统三体间的纠缠被增强。增大原子与热库之间的失谐量,两原子之间的纠缠会增大,原子与热库以及三体间的纠缠会减弱。

英文摘要：

In this paper, the entanglement dynamics in a system composed of two two-level atoms and a reservoir at zero temperature are researched. Considering the dipole-dipole interaction of two atoms and the detuning between atoms and reservoir, the influence to the entanglement by different parameters is analyzed in the initially entangled and unentangled cases. We calculate the bipartite entanglement between two atoms, atom and reservoir and also the tripartite entanglement of the system. The results indicate that all the bipartite entanglements go to zero when the two atoms are in the maximum entanglement initially. The entanglement between atom and reservoir is spoiled while the atomic entanglement and tripartite entanglement strengthens with the increase of dipole-dipole interaction strength. Similarly, the atomic entanglement is strengthened while the entanglement between atom and reservoir as well as the tripartite entanglement is spoiled with the increase of the detuning between atoms and reservoir.