%0 Journal Article
%T Information entropy squeezing of the atom of an arbitrary initial state via the two-photon process<br>双光子过程中任意初态原子的信息熵压缩
%A Liu Xiao-Juan
%A Zhou Bing-Ju
%A Fang Mao-Fa
%A Zhou Qing-Ping
%A <br>刘小娟
%A 周并举
%A 方卯发
%A 周清平
%J 物理学报
%D 2006
%I 
%X From the quantum information point of view we investigate the entropy squeezing properties of a two_level atom with arbitrary initial state interacting with the coherent field via the two_photon process. The influence of the initial state of the system on the atomic information entropy squeezing is discussed. The numerical results obtained from the uncertainly relation of quantum information entropy are compared with those obtained from the uncertainly relation of Heisenberg. It is shown that the number of squeezed component of the atomic dipole, squeezed frequency, squeezed amplitude and squeezed direction of the atomic information entropy squeezing can be controlled by choosing the initial atomic distribution angle, the atomic mixing degree and the relative phase of the field mode, respectively. Quantum information entropy is a remarkable precise measure for the atomic squeezing.
%K two_level atom
%K two_photon process
%K information entropy squeezing
%K variance squeezing<br>二能级原子
%K 双光子过程
%K 信息熵压缩
%K 方差压缩
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=F666845FC88A939B&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=0B39A22176CE99FB&sid=F20A770D14436F7C&eid=FD6137FFCE59D193&journal_id=1000-3290&journal_name=物理学报&referenced_num=12&reference_num=43