›› 2014, Vol. 23 ›› Issue (9): 90308-090308.doi: 10.1088/1674-1056/23/9/090308

• GENERAL • 上一篇    下一篇

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

马松雅a, 罗明星b c   

  1. a School of Mathematics and Information Sciences, Henan University, Kaifeng 475004, China;
    b School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;
    c State Key Laboratory of Information Security, Chinese Academy of Sciences, Beijing 100093, China
  • 收稿日期:2014-01-26 修回日期:2014-03-05 出版日期:2014-09-15 发布日期:2014-09-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61201253 and 61303039) and the Fundamental Research Funds for the Central Universities of China (Grant No. 2682014CX095).

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

Ma Song-Ya (马松雅)a, Luo Ming-Xing (罗明星)b c   

  1. a School of Mathematics and Information Sciences, Henan University, Kaifeng 475004, China;
    b School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;
    c State Key Laboratory of Information Security, Chinese Academy of Sciences, Beijing 100093, China
  • Received:2014-01-26 Revised:2014-03-05 Online:2014-09-15 Published:2014-09-15
  • Contact: Ma Song-Ya E-mail:masongya0829@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61201253 and 61303039) and 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.

关键词: χ state, remote state preparation, Hurwitz matrix equation, measurement basis, permutation group

Abstract: 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.

Key words: χ state, remote state preparation, Hurwitz matrix equation, measurement basis, permutation group

中图分类号:  (Quantum communication)

  • 03.67.Hk
03.67.-a (Quantum information) 03.65.-w (Quantum mechanics)