%0 Journal Article
%T Disentanglement and Decoherence in the Three-qubit System<br>三量子位系统的消相干和退纠缠
%A LIAN Han-li
%A HU Ming-liang
%A <br>连汉丽
%A 胡明亮
%J 光子学报
%D 2008
%I 
%X The disentanglement and decoherence in the three-qubit system are studied based on the model of reservoir of harmonic oscillators by solving the non-Markovian approximation master equation, in which they are caused by a pure dephasing process. The GHZ-class state, W-class state and WGHZ-class state are discussed in detail. In all cases, the time scales of the decoherence and disentanglement are obtained. For the initial GHZ-class state, the coherence and entanglement decay completely; for the initial W-class state, the decoherence and disentanglement do not occur; for the initial WGHZ-class state, the decoherence happens partly, and the entanglement varies with time firstly and then becomes a certain asymptotic value.
%K Decoherence
%K Disentanglement
%K Time scale
%K Quantum optics<br>消相干
%K 退纠缠
%K 时间尺度
%K 量子光学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=8409C0C2D08F32A8EFDCB40BA88199C4&yid=67289AFF6305E306&vid=42425781F0B1C26E&iid=5D311CA918CA9A03&sid=57133673016E56C3&eid=4C12600E16738B59&journal_id=1004-4213&journal_name=光子学报&referenced_num=3&reference_num=17