Efficient remote preparation of arbitrary twoand three-qubit states via the χ state  

作　　者：马松雅 罗明星 

机构地区：[1]School of Mathematics and Information Sciences,Henan University [2]School of Information Science and Technology,Southwest Jiaotong University [3]State Key Laboratory of Information Security,Chinese Academy of Sciences

出　　处：《Chinese Physics B》2014年第9期100-106,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.61201253 and 61303039);the Fundamental Research Funds for the Central Universities of China(Grant No.2682014CX095)

摘　　要：The application of χ state are investigated in remote state preparation （RSP）. By constructing useful measurement bases with the aid of Hurwitz matrix equation, we propose several RSP schemes of arbitrary two- and three-qubit states via the χ state as the entangled resource. It is shown that the original state can be successfully prepared with the probability 100% and 50% for real coefficients and complex coefficients, respectively. For the latter case, the special ensembles with unit success probability are discussed by the permutation group. It is worth mentioning that the novel measurement bases have no restrictions on the coefficients of the prepared state, which means that the proposed schemes are more applicable.The application of χ state are investigated in remote state preparation （RSP）. By constructing useful measurement bases with the aid of Hurwitz matrix equation, we propose several RSP schemes of arbitrary two- and three-qubit states via the χ state as the entangled resource. It is shown that the original state can be successfully prepared with the probability 100% and 50% for real coefficients and complex coefficients, respectively. For the latter case, the special ensembles with unit success probability are discussed by the permutation group. It is worth mentioning that the novel measurement bases have no restrictions on the coefficients of the prepared state, which means that the proposed schemes are more applicable.

关 键 词：χ state remote state preparation Hurwitz matrix equation measurement basis permutation group 

分 类 号：O413[理学—理论物理]