中文摘要：

文献Phys.Rev.A 90,042108（2014）提出了一种级联环境模型,即单量子系统与光学腔作用,而腔又级联着一个有结构的零温玻色热库。本文在此基础上,研究两个二能级原子在该级联环境下的纠缠动力学,考察原子与腔场的耦合强度、原子间的偶极-偶极相互作用、热库的谱宽度、腔场与库间的失谐对原子间纠缠以及两原子与腔组成的三体纠缠动力学的影响。结果表明,在一定条件下两原子间的二体纠缠和原子-腔的三体纠缠在长时极限下都趋于稳定值,且随着偶极-偶极相互作用增加而增大,而无论腔场与热库耦合强弱,失谐量的增加都可以抑制纠缠的衰减。

英文摘要：

In the reference Phys.Rev.A 90,042108（2014）,a hierarchical environment was proposed,namely,a single quantum system interacts with a optical cavity which was in turn connected to a structured zero temperature Bosonic reservoir.Based on that work,the entanglement dynamics of two two-level atoms in the hierarchical environment was studied in this work.The effects of coupling strength between atoms and the cavity,the dipoledipole interaction strength,the width of reservoir as well as the detuning amount between the cavity and the reservoir on the bipartite entanglement dynamics of the two atoms and the tripartite entanglement dynamics of the atoms with the cavity were explored.As is shown,in certain condition both the bipartite and tripartite entanglement approach steady values in the long-time limit.Moreover,the stationary entanglement increases with the dipole-dipole interaction strength,while the increase of detuning amount can suppress the entanglement decay independent of the coupling strength of the cavity and the reservoir.