%0 Journal Article
%T Implementing remotely a single-qubit rotation operation by three-qubit entanglement<br>用三粒子纠缠态作量子信道远程操纵单比特旋转
%A Chen Li-Bing
%A Lu Hong
%A Liu Yu-Hua
%A <br>陈立冰
%A 路洪
%A 刘玉华
%J 中国物理 B
%D 2005
%I 
%X We investigate the problem of quantum remote implementation of a single-qubit rotation operation using three-qubit entangled state. Firstly,we utilize the entanglement property of maximally entangled Greenberger--Horne--Zeilinger (GHZ) state to design a theoretical scheme for implementing the operation remotely with unit fidelity and unit probability. Then, we put forward two schemes for conclusive implementing the non-local single-qubit rotation with unit fidelity by employing a partially entangled pure GHZ state as quantum channel. The features of these schemes are that a third side is included,who may participate the process of quantum remote implementation as a supervisor. Furthermore, when the quantum channel is partially entangled,the third side can rectify the state distorted by imperfect quantum channel.In addition to the GHZ class state, the $W$ class state can also be used to remotely implement the same operation probabilistically. The probability of successful implementation using the $W$ class state is always less than that using the GHZ class state.
%K single-qubit rotation
%K remote implementation
%K GHZ class state
%K $W$ class state<br>单比特旋转
%K 远程操纵
%K GHZ型态
%K W型态
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=50775890FA73B069532A4B22366F3B31&yid=2DD7160C83D0ACED&vid=F3583C8E78166B9E&iid=DF92D298D3FF1E6E&sid=9F0564033BABD14F&eid=F016DE22306D4D4A&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=27