Tavis-Cummings模型中原子间偶极相互作用对场熵演化特性的影响

Influence of the dipole-dipole interaction between atoms on the entropy properties of field in the Tavis-Cummings model

研究了单模辐射场与耦合双原子相互作用系统场熵的演化特性 ,讨论了原子间偶极相互作用对场熵演化特性的影响 .研究结果表明 ,当原子间偶极 偶极相互作用不太强时 ,场熵的时间演化行为与单光子J C模型相似 ;当原子间偶极 偶极相互作用足够强时 ,场熵的时间演化行为与双光子J

The entropy evolution properties of the field interacting with two coupling-atoms are studied by means of quantum theory. Using numerical method, the influence of the dipole-dipole interaction between atoms on the entropy evolution properties of the field in the Tavis-Cummings(T-C) model is discussed. The results indicate that the entropy evolution behaviour of the field in T-C model is similar to the single-photon J-C model if the dipole-dipole interaction between atoms is weaker and it is same as the double-photon J-C model if the dipole-dipole interaction between atoms is strong enough.