原子-场强度相关耦合时原子质心平移运动与内态布居的关系  

Correlation between the atomic translational motion and its internal state population for the intensity-dependent coupling

作　　者：唐京武[1] 黄笃之[1] 易有根[1] 

机构地区：[1]湖南科技大学物理学院,湘潭411201

出　　处：《原子与分子物理学报》2005年第4期762-768,共7页Journal of Atomic and Molecular Physics

基　　金：湖南省自然科学基金(03Jy6003);湖南省教育厅基金(03c5340)资助课题

摘　　要：基于原子与腔场共振相互作用及原子-场缀饰态,讨论了驻波腔场中两能级原子与场耦合强度相关时的原子质心的量子化平移运动对原子内态布居间的相互影响。结果表明原子平移运动敏感地依赖于原子的内态布居。特别地,当原子处于两内态等权重同位相迭加态时,平移运动呈现出很稳定的特征。The influence of the atomic internal state population on its translational motion in a quantized standing-wave cavity field with spatial periodic structure is investigated for the intensity-dependent coupling case. On the basis of resonance interaction between the atom and the cavity field and with the aid of the atomic-field dressed state, the Schrodinger equations satisfied by the atomic translational motion for the two different atomic dressed internal states are built and their general relation for a spatial periodic cavity field is obtained. And under an appropriate approximation, the state vector of the whole system is derived and allows us to study the interaction between the atomic internal state and its translational dynamics. It is found that the scalar product of the translational motion wave functions in Hilbert space determines the atomic internal state population, as well as, the distortion of the atomic translational motion wave-packet is sensitivity to its initial internal state population for a quantized standing-wave cavity field at coherent state.

关 键 词：驻波腔场 两能级原子 平移运动 内态布居 

分 类 号：O562.2[理学—原子与分子物理]