研究了受外场驱动的两个二能级系统分别与两个单模量子化光场相互作用模型中 纠缠演化及转移问题。该工作主要对外场驱动的Landau-Zener模型进行了研究,采用旋转波 近似的方法,通过数值计算详细分析了二能级系统初始状态、能级间的耦合常数以及驱动外场的 参数对子系统间纠缠和转移特性的影响。结果表明,适当调节模型中的参数,可以使系统初始纠 缠完全转移为光腔场间的纠缠,实现二能级系统与光场间的最大纠缠转移。

The entanglement dynamical behaviors of two two-level systems,which respectively interact with a single-mode quantum light-cavity field,were investigated. The Landau-Zener model driven by the classical out-field was studied. By means of the transformed rotating-wave approximation(TRWA ),effects of the initial entanglement,coupling strength between two levels and parameter of the classical out-field on the entanglement evolution and transfer of two two-level systems were analyzed by numerical calculation. The results show that when choosing the appropriate condition,the initial entanglement can be perfectly transferred into the light-cavity fields. So the biggest entanglement transfer between the two-level systems and light-cavity fields can be realized easily.