原子与耦合腔相互作用系统中原子布居数的演化

The evolution of the atom's occupancy in the system of atoms interacting with coupled cavities

研究两个二能级原子分别与耦合腔A和B相互作用系统中原子布居差随时间演化规律。讨论腔场间的耦合强度变化对原子布居差演化的影响。研究结果表明:随腔场间耦合强度的增强,原子布居差随时间演化的行为经历从不规则振荡到呈现周期性振荡的过程。当腔场间耦合强度较弱时,原子布居差随时间演化呈现崩塌和恢复效应。当腔场间耦合强度较强时,原子布居差呈现周期性演化规律。

We study the one-excitation dynamics for the system comprising two two-level atoms resonantly interacting with two coupled cavities.The evolution of the atom＇s occupancy is investigated.The influences of coupling constant between cavities on the evolution of the atom＇s occupancy are discussed.The results obtained show that the evolution of the atom＇s occupancy displays collapse and revival effect when the coupling constant between cavities is much smaller than coupling constant between atom and cavity,and it displays periodicity when the coupling constant between cavities is much larger than coupling constant between atom and cavity.