中文摘要：

利用数值计算的方法,研究了Kerr介质腔中的J-C模型二能级原子和单模光场作用过程中信息熵和纠缠演化,得到了Kerr效应对纠缠态纠缠性质的影响。结果表明,Kerr介质对耦合体系的纠缠度有强烈的影响,在合适的Kerr效应下,量子态将长时间保持最大纠缠.

英文摘要：

Using the numerical method, the information entropy and evolution of entanglement of atom and a single mode light field of Jaynes-Cumming （J-C） model in the Kerr effect medium cavity were studied. The influence of Kerr effect on the properties of entangled states was obtained. The results show that Kerr medium has a strong influence on entanglement property of coupled system. With the appropriate Kerr effect, the maximally entangled quantum state will remain long.