%0 Journal Article
%T Remote preparation of a Greenberger--Horne--Zeilinger state via a two-particle entangled state<br>Remote preparation of a Greenberger-Horne-Zeilinger state via a two-particle entangled state
%A Lin Xiu
%A Li Hong-Cai
%A Lin Xiu-Min
%A Li Xing-Hua
%A Yang Rong-Can
%A <br>林 秀
%A 李洪才
%A 林秀敏
%A 李兴华
%A 杨榕灿
%J 中国物理 B
%D 2007
%I 
%X We present two schemes for realizing the remote preparation of a Greenberger--Horne--Zeilinger (GHZ) state. The first scheme is to remotely prepare a general N-particle GHZ state with two steps. One is to prepare a qubit state by using finite classical bits from sender to receiver via a two-particle entangled state, and the other is that the receiver introduces N - 1 additional particles and performs N - 1 controlled-not (C-Not) operations. The second scheme is to remotely prepare an N-atom GHZ state via a two-atom entangled state in cavity quantum electrodynamics (QED). The two schemes require only a two-particle entangled state used as a quantum channel, so we reduce the requirement for entanglement.
%K remote state preparation
%K two-particle entangled state
%K Greenberger--Horne--Zeilinger
%K hspace*{1
%K 9cm} (GHZ) state
%K controlled-not operation
%K cavity quantum electrodynamics (QED)<br>双粒子纠缠态
%K Greenberger-Horne-Zeilinger态
%K 远程态制备
%K 腔场量子电动力学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=51EC29F0F1FE47960B607930A33AD2AF&yid=A732AF04DDA03BB3&vid=7801E6FC5AE9020C&iid=94C357A881DFC066&sid=B169842BD52221DD&eid=4BE5C218638B5C80&journal_id=1009-1963&journal_name=中国物理&referenced_num=1&reference_num=30