应用J-C模型与相互作绘景中的密度算符理论,研究了2个相互纠缠的理想腔体中2个二能级Rydberg原子与2个纠缠耗散腔场单光子共振相互作用过程中的量子退相干,得到了2个二能级原子的退相干因子.通过对数值计算,讨论了耗散系数和原子-光场相互作用耦合系数对原子态的量子相干性的演化特性的影响.结果表明,耗散系数和原子-光场相互作用强度不仅影响原子态的量子相干性的演化的振荡性,而且影响其演化的周期性.
In this paper,by using J-C model and the density operator theory in interaction picture,Studied the quantum decoherence in the system of two two-level Rydberg atom and two entangled dissipative cavities with single-photon resonant interaction.The decoherence factor of the atoms was gotten and analyzed how the cavity dissipation coefficients and the atom-cavity interaction coupling coefficient influenced the oscillation model and the evolution period of the coherence of quantum state of the atoms.