Maximum privacy without coherence, zero-error

被引：2
|
作者：
Leung, Debbie [1 ]
Yu, Nengkun [1 ,2 ,3 ]
机构：
[1] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
[2] Univ Technol Sydney, Fac Engn & Informat Technol, Ctr Quantum Computat & Intelligent Syst, Sydney, NSW 2007, Australia
[3] Univ Guelph, Dept Math & Stat, Guelph, ON N1G 2W1, Canada
来源：
JOURNAL OF MATHEMATICAL PHYSICS | 2016年 / 57卷 / 09期
基金：
加拿大自然科学与工程研究理事会;
关键词：
QUANTUM CHANNEL; CLASSICAL CAPACITY; SHANNON CAPACITY; SUPERACTIVATION;
D O I：
10.1063/1.4962340
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the possible difference between the quantum and the private capacities of a quantum channel in the zero-error setting. For a family of channels introduced by Leung et al. [Phys. Rev. Lett. 113, 030512 (2014)], we demonstrate an extreme difference: the zero-error quantum capacity is zero, whereas the zero-error private capacity is maximum given the quantum output dimension. Published by AIP Publishing.
引用
收藏
页数：8
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