有效二能级原子与压缩相干态相互作用的量子动力学

根据原子反转和场熵的特征，研究初始辐射场为压缩相干态时，双光子Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型中原子和场的量子动力学性质，发现在粒子数停止反转期间，原子和场之间信息的关联是变化的，光场和不改变崩塌与复苏的振荡周期，Ｓｔａｒｋ 应对崩塌与复苏振荡的周期有明显的影响；它们崩塌与复苏的振荡包络及场熵的大小都具有明显的影响。

Quantum Dynamics of an Effective Two level Atom Interacting with the Squeezed Coherent States

We investigate the atomic inversion and field entropy evolution for the two photon Jaynes Cummings model assuming the atom and the field to be initially in the ground state and squeezed coherent state, respetively. It is shown that the field entropy which indicated correlation between the atom and the field maintains oscillations during collapse period. It is shown also that the Stark shift has an obvious influence on the magnitude of the field entropy and the wave package outlines of revivals.