Minimax discrimination of two Pauli channels

被引：23

作者：

D'Ariano, GM ^{[1
]}

Sacchi, MF

Kahn, J

机构：

[1] INFM, QUIT Grp, Unita Pavia, I-27100 Pavia, Italy

[2] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy

[3] Univ Paris Sud 11, Dept Math, F-91405 Orsay, France

来源：

PHYSICAL REVIEW A | 2005年 / 72卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.72.052302

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider the problem of optimally discriminating two Pauli channels in the minimax strategy, maximizing the smallest of the probabilities of correct identification of the channel. We find the optimal input state at the channel and show the conditions under which using entanglement strictly enhances distinguishability. We finally compare the minimax strategy with the Bayesian one.

引用

页数：7

共 28 条

[1] Multiple-copy two-state discrimination with individual measurements -: art. no. 032338 [J].