%0 Journal Article
%T Coherent Control of Population Transfer in Li Atoms via Chirped Microwave Pulses<br>
%A JIA Guang-Rui
%A ZHANG Ji-Cai
%A ZHANG Xian-Zhou
%A REN Zhen-Zhong
%A <br>
%J 中国物理快报
%D 2009
%I 
%X We demonstrate theoretically that Li atoms can be transferred to states of a lower principal quantum number by exposing them to a frequency chirped microwave pulse. The population transfer of Li atoms from the n=75 state to n=70 with more than 90% efficiency is achieved by means of the sequential single-photon &#8710; n=-1 transitions. The calculation fully utilizes all of the available orbital angular momentum l states for a given n, and the interference pattern and population evolution dynamics of individual l states are analyzed in detail. Using the time-dependent multilevel approach, we describe the process reasonably well as a sequence of adiabatic rapid passages.
%K 32
%K 80
%K Qk
%K 32
%K 30
%K Bv
%K 32
%K 80
%K -t<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=961F21705404129FCCC00E891C9554D4&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=F3090AE9B60B7ED1&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0