压缩态光场与三能级原子依赖强度耦合系统场熵的演化

研究了压缩态光场与V-型三能级原子依赖强度耦合系统场熵的演化特性，讨论了初始光场压缩因子和双光子跃迁失谐量对场熵演化的影响，研究结果表明，场熵的大小随初始光场压缩因子的增大而增大，较小时，场熵的演化具有明显的周期性，这种周期性随着r的增大而逐渐消失；失谐量Ω的大小对场熵值也有显著的影响，场熵值随失谐量的变化而呈现不规则的振荡。

Evolution of the Entropy of Squeezed Field Interacting with the Three Level Atom via Intensity-dependent Coupling

The evolution properties of the entropy of squeezed field interacting with the V-type three level atom via intensity-dependent coupling have been studied. The discussion is focused on the influence of the detuning and initial squeezing factor of light on the field entropy. The results show that the field entropy value rises with the increasing of initial squeezing factor of light. When the squeezing factor is smaller, the field entropy evolution is periodic and this periodicity vanishes gradually with the increasing of initial squeezing factor of light. The detuning influences remarkably on the field entropy which oscilates irregularly with the increasing of detuning.