CLASSICAL CAPACITY OF A NOISELESS QUANTUM CHANNEL ASSISTED BY NOISY ENTANGLEMENT

被引：0

作者：

Horodecki, Michal ^{[1
]}

Horodecki, Pawel ^{[2
]}

Horodecki, Ryszard ^{[1
]}

Leung, Debbie W. ^{[3
]}

Terhal, Barbara M. ^{[3
]}

机构：

[1] Univ Gdansk, Inst Theoret Phys & Astrophys, PL-80952 Gdansk, Poland

[2] Gdansk Univ Technol, Fac Appl Phys & Math, PL-80952 Gdansk, Poland

[3] IBM Corp, TJ Watson Res Ctr, New York, NY 10598 USA

来源：

QUANTUM INFORMATION & COMPUTATION | 2001年 / 1卷 / 03期

关键词：

Capacity of a quantum channel; quantum entanglement; superdense coding;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

We derive the general formula for the capacity of a noiseless quantum channel assisted by an arbitrary amount of noisy entanglement. In this capacity formula, the ratio of the quantum mutual information and the von Neumann entropy of the sender's share of the noisy entanglement plays the role of mutual information in the completely classical case. A consequence of our results is that bound entangled states cannot increase the capacity of a noiseless quantum channel.

引用

页码：70 / 78

页数：9

共 23 条

[1] von Neumann capacity of noisy quantum channels [J].