【摘要】 研究了相干态光场与级联型三能级原子相互作用过程中场熵的演化特性,数值计算结果表明:场熵随时间的演化具有明显的振荡特性,并且受相干态光场强度|α|变化的影响,当|α|较小时随|α|的增大,场熵的平均值增大,当|α|大于一定值时,场熵的振荡演化出现崩塌和复苏现象,熵的平均值反而随|α|的增大而变小.更多还原

【Abstract】 The entropy evolution of the field in the system of the cascade three-level atom interacting with coherent state field is studied.The results obtained using the numerical method indicate that the field entropy is influenced by the field parameters ｜α｜,a) when ｜α｜ is small,with the increasing of the value of ｜α｜,the average value of the field entropy is increasing and the related degree of the field-atom is getting stronger;b) when ｜α｜ is larger than certain value,with the increasing of the value of ｜α｜,the average value of the field entropy is decreasing,and the related degree of the field-atom is getting weaker.更多还原