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

作     者：FANG Ming,~1 LIU Yi-Min,~(2,3) LIU Jun,~1 SHI Shou-Hua,~1 and ZHANG Zhan-Jun~(1,3,+) 1 School of Physics & Material Science, Anhui University, Hefei 230039, China 2 Department of Physics, Shaoguan University, Shaoguan 512005, China 3 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(英文版))

年 卷 期：2006年第11期

页      面：849-852页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 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 Outstanding Youth under Grant No. 06042087 the Key Fund of the Ministry of Education of China under Grant 

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.