%0 Journal Article
%T Interaction of an atom with a field with varying frequency without rotating-wave approximation<br>非旋波近似下频率变化的场与原子的相互作用
%A Jia Fei
%A Xie Shuang-Yuan
%A Yang Ya-Ping
%A <br>贾 飞
%A 谢双媛
%A 羊亚平
%J 物理学报
%D 2006
%I 
%X The interactions between a two-level atom and a coherent field with a time-varying frequency without rotating-wave approximation have been investigated. The typical cases of the frequency of the field varying with time in the sine and rectangle forms have been considered. It is found that the collapse-revival phenomena and quick oscillations due to virtual photon processes of the atomic population inversion are deformed as the frequency changes with time in the sine form. The rectangular frequency modulation can lead to some new collapses and revivals in the evolution of the atomic population inversion. The sudden jumping of the field frequency can also lead to the sudden change of the quick oscillations due to virtual photon processes.
%K Jaynes-Cummings model
%K without rotating-wave approximation
%K atomic population inversion<br>Jaynes-Cummings模型
%K 非旋波近似
%K 原子布居数反转
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=2D70FA9503D61070&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=708DD6B15D2464E8&sid=F42DB6E2B4CCC05C&eid=210C7E90937C412A&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=28