Lower Bounds on the Capacities of Quantum Relay Channels

被引：5

作者：

Shi Jin-Jing ^{[1
]}

Shi Rong-Hua ^{[1
]}

Peng Xiao-Qi ^{[2
]}

Guo Ying ^{[1
]}

Yi Liu-Yang ^{[1
]}

Lee Moon-Ho ^{[3
]}

机构：

[1] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Peoples R China

[2] Hunan First Normal Univ, Dept Informat Sci & Engn, Changsha 410205, Hunan, Peoples R China

[3] Chonbuk Natl Univ, Inst Informat & Commun, Chonju 561756, South Korea

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2012年 / 58卷 / 04期

基金：

中国国家自然科学基金;

关键词：

quantum communication; quantum channel; capacity; quantum relay; COMMUNICATION; INFORMATION;

D O I：

10.1088/0253-6102/58/4/06

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Three kinds of quantum relay communication models are proposed, i.e., the quantum single relay model, quantum serial multi-relay model and quantum parallel multi-relay model. The channel capacities of those three kinds of systems are analyzed with the theory of quantum Markov trace-preserving process and the generalized theory of simple multi-hop channel in quantum system. Motivated by the quantum Fano inequality, the lower bounds of that channel capacities are derived. The illustration and simulation present the trends of the lower bounds on the channel capacities of different quantum relay systems based on the depolarizing noisy channel.

引用

页码：487 / 492

页数：6

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