Contraction coefficients for noisy quantum channels

被引：11
作者：
Hiai, Fumio [1 ]
Ruskai, Mary Beth [2 ]
机构：
[1] Tohoku Univ, Hakusan 3-8-16-303, Abiko, Chiba 2701154, Japan
[2] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
来源：
JOURNAL OF MATHEMATICAL PHYSICS | 2016年 / 57卷 / 01期
关键词：
RELATIVE ENTROPY; TRACE FUNCTIONS; MAPS; INFORMATION; EXTENSION; PRODUCT; METRICS;
D O I：
10.1063/1.4936215
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Generalized relative entropy, monotone Riemannian metrics, geodesic distance, and trace distance are all known to decrease under the action of quantum channels. We give some new bounds on, and relationships between, the maximal contraction for these quantities. (C) 2015 AIP Publishing LLC.
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页数：33
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