摘要
利用Tavis-Cummings模型研究了耦合二能级原子通过多光子跃迁与相干态光场相互作用系统中场熵的演化规律,讨论了原子间耦合强度和光场初始平均光子数的变化对场熵演化的影响.数值计算结果袁明:场熵的演化受原子间耦合强度和光场初始平均光子数的变化的影响.随光场初始平均光子数的增大,场熵平均值增大.
Using Tavis-Cummings model,the entropy evolution of the field in interaction of two coupling two-level atoms with the single mode coherent field through multiphoton transition is studied. The influences of coupling coefficient between atoms and initial mean photon number of field on entropy evolution of the field are discussed. The results obtained by numerical calculations show that with increasing of initial mean photon number of field the average of field-entropy increases,and the influence of coupling coefficient between atoms on entropy evolution of the field is small.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2009年第1期119-124,共6页
Journal of Atomic and Molecular Physics
基金
福建省新建本科高校新世纪优秀人才支持计划资助项目
福建省自然科学基金(2008J0217)
关键词
耦合二能级原子
多光子
相干态
场熵演化
two coupling two-level-atoms
multiphoton
coherent state
the evolution of the field entropy
