Assisted Cloning and Orthogonal Complementing of an Arbitrary Unknown Two-Qubit Entangled State

作     者：FANG Ming LIU Yi-Min LIU Jun SHI Shou-Hua ZHANG Zhan-Jun 

作者机构：School of Physics & Material Science Anhui University Hefei 230039 China Department of Physics Shaoguan University Shaoguan 512005 China The State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics the Chinese Academy of Sciences Wuhan 430071 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2006年第46卷第5X期

页      面：849-852页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：The project supported by National Natural Science Foundation of China under Grant No. 10304022  the Science-Technology Fund of Anhui Province for 0utstanding Youth under Grant No. 06042087  the Key Fund of the Ministry of Education of China under Grant No. 206063  Natural Science Foundation of Hubei Province of China under Grant No  2006ABA354 

主　　题：quantum cloning arbitrary two-qubit entangled state two-qubit projective measurement 

摘      要：Based on A.K. Pati＇s original idea [Phys. Rev. A 61 （2000） 022308] on single-qubit-state-assisted clone, very recently Zhan has proposed two assisted quantum cloning protocols of a special class of unknown two-qubit entangled states [Phys. Lett. A 336 （2005） 317]. In this paper we further generalize Zhan＇s protocols such that an arbitrary unknown two-qubit entangled state can be treated.