Optimal cloning for two pairs of orthogonal states

被引:26
作者
Bruss, D
Macchiavello, C
机构
[1] Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany
[2] Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy
[3] INFM, Unita Pavia, I-27100 Pavia, Italy
来源
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2001年 / 34卷 / 35期
关键词
D O I
10.1088/0305-4470/34/35/307
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the optimal cloning transformation for two pairs of orthogonal states of two-dimensional quantum systems, and derive the corresponding optimal fidelities.
引用
收藏
页码:6815 / 6819
页数:5
相关论文
共 7 条
[1]  
Bennett C. H., 1984, PROC IEEE INT C COMP, P175, DOI [DOI 10.1016/J.TCS.2014.05.025, 10.1016/j.tcs.2014.05.025]
[2]   Optimal universal and state-dependent quantum cloning [J].
Bruss, D ;
DiVincenzo, DP ;
Ekert, A ;
Fuchs, CA ;
Macchiavello, C ;
Smolin, JA .
PHYSICAL REVIEW A, 1998, 57 (04) :2368-2378
[3]   Optimal universal quantum cloning and state estimation [J].
Bruss, D ;
Ekert, A ;
Macchiavello, C .
PHYSICAL REVIEW LETTERS, 1998, 81 (12) :2598-2601
[4]  
Bruss D, 2000, PHYS REV A, V62, DOI [10.1103/PhysRevA.62.012302, 10.1103/PhysRevA.62.062302]
[5]   Quantum copying: Beyond the no-cloning theorem [J].
Buzek, V ;
Hillery, M .
PHYSICAL REVIEW A, 1996, 54 (03) :1844-1852
[6]   Optimal quantum cloning machines [J].
Gisin, N ;
Massar, S .
PHYSICAL REVIEW LETTERS, 1997, 79 (11) :2153-2156
[7]   Optimal cloning of pure states [J].
Werner, RF .
PHYSICAL REVIEW A, 1998, 58 (03) :1827-1832