%0 Journal Article
%T Controlling the entanglement among three atoms by quantum-jump-based feedback<br>耗散环境下三原子之间稳定纠缠的量子反馈控制
%A Chen Yu
%A Zou Jian
%A Li Jun-Gang
%A Shao Bin
%A <br>陈宇
%A 邹健
%A 李军刚
%A 邵彬
%J 物理学报
%D 2010
%I 
%X We consider a model consisting of three two-level atoms in a heavily damped cavity. We show that the quantum-jump-based feedback can be used to generate a steady entangled state of three atoms against decoherence. When the feedback acts on just one of the atoms, it can protect a maximally entangled state of other two atoms. When the feedback acts on three atoms, by choosing appropriate parameters we can obtain a decoherence-free subspace spanned by two vectors, and by using quantum trajectory Monte Carlo wave function method we find that the maximally entangled state of three atoms in this decoherence-free subspace can be obtained for some specific initial conditions.
%K entanglement
%K quantum feedback
%K quantum trajectory<br>量子纠缠
%K 量子反馈
%K 量子轨迹
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=8BBCB6045014230EC1C2FF1ACF4069A1&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=59906B3B2830C2C5&sid=9B1FFB9A3F9C05F0&eid=720B1E9D0918F1BA&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=37