Optimal joint remote state preparation of equatorial states

被引：52
作者：
Li, Xihan [1 ,2 ]
Ghose, Shohini [2 ,3 ]
机构：
[1] Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China
[2] Wilfrid Laurier Univ, Dept Phys & Comp Sci, Waterloo, ON N2L 3C5, Canada
[3] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
来源：
QUANTUM INFORMATION PROCESSING | 2015年 / 14卷 / 12期
基金：
中国国家自然科学基金; 加拿大自然科学与工程研究理事会;
关键词：
Joint remote state preparation; Equatorial N-qubit state; Succeed deterministically; CLASSICAL COMMUNICATION COST;
D O I：
10.1007/s11128-015-1141-7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present a scheme for optimal joint remote state preparation of two-qubit equatorial states. Our protocol improves on a previous scheme (Choudhury and Dhara in Quantum Inf Process 14:373-379, 2015) that had a success probability of 25 %, which increased to 50 % when extra classical information is sent to the receiver. We show that using our modified scheme, the desired state can be prepared deterministically with the same quantum channel. Moreover, we generalize the scheme to prepare N-qubit equatorial states in which the receiver can reconstruct the original state with 100 % success probability.
引用
收藏
页码：4585 / 4592
页数：8
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