%0 Journal Article
%T Dense Coding with Multi-Atom Entanglement Channel in Cavity QED
%A WANG Xin-Wen
%A LIU Xiang
%A WANG Zhi-Yong
%A <br>汪新文
%A 刘翔
%A 汪志勇
%J 中国物理快报
%D 2007
%I 
%X Dense coding of multi-atom entangled states in cavity QED is studied. If the quantum channel is generalized GHZ states, dense coding can be directly realized in a simply way. As for the partially entangled pure states, we propose a feasible protocol for entanglement concentration, and the emciency of information transmitted is calculated. The schemes are insensitive to the cavity decay and the field state, due to the fact that the interaction here is a large-detuned one between atoms and the cavity.
%K 03
%K 67
%K Hk
%K 42
%K 50
%K -p<br>稠密密码
%K 多原子缠结渠道
%K 空腔
%K QED
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=A6F1F92187EC7BB8D702BDFDAE66F1AE&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=CA4FD0336C81A37A&sid=708DD6B15D2464E8&eid=F3583C8E78166B9E&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0