%0 Journal Article
%T Cluster-state preparation in thermal cavities without single-qubit operation<br>
%A Zhang Xiao-Long
%A <br>
%J 物理学报
%D 2008
%I 
%X A potential scheme is proposed for generating cluster states of many atoms in cavity quantum electradynamics (QED), in which an unorthodox encoding is employed with the ground state being qubit $\left\vert 0\right\rangle $ while two closely spaced upper states being qubit $\left\vert 1\right\rangle $. Throughout the scheme the cavities can be in thermal states but are only virtually excited. We show how to create the cluster states by performing a two-step but no single-qubit operation. Discussion is also carried out on the experimental feasibility of our scheme.
%K cluster-state
%K cavity QED
%K entanglement
%K quantum computing<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=4A47DE79EF4D6289835CDB60F62EBE10&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=CA4FD0336C81A37A&sid=BE33CC7147FEFCA4&eid=B6DA1AC076E37400&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0