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中文摘要：
在Milburn方程的支配下,研究了在偶极相互作用存在的前提下Kerr介质对两原子系统纠缠度的影响.通过concurrence计算了系统的纠缠度,讨论了concurrence随时间的振荡情况.结果表明,在偶极相互作用存在的前提下,通过适当选取Kerr介质的耦合常数χ,可以更好地提高系统的纠缠度,从而有效地抑制内禀消相干的作用.同时还发现在增大纠缠度方面,对于Ω的不同取值,倍数Λ的取值也不同.
英文摘要：
We investigate the influence of Kerr medium on the concurrence of the two-atom system under the condition of existence of dipole-dipole interaction. The entanglement of the system is calculated by making use of concurrence. We discuss the variation of the concurrence with time. The result shows that the appropriate choice for the nonlinear coupling constant X of Kerr medium can improve the concurrence of the system and restrain effectively the intrinsic decoherence of the system. We also find that with respect to increasing concurrence, the multiple ∧ may take different values as Ω varyies.
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