Classical and quantum capacities of a fully correlated amplitude damping channel

被引：37

作者：

D'Arrigo, A. ^{[1
,2
]}

Benenti, G. ^{[3
,4
,5
]}

Falci, G. ^{[1
,2
,6
,7
]}

Macchiavello, C. ^{[8
,9
]}

机构：

[1] CNR IMM UOS Univ MATIS, Consiglio Nazl Ric, I-95123 Catania, Italy

[2] Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy

[3] CNISM, I-22100 Como, Italy

[4] Univ Insubria, Ctr Nonlinear & Complex Syst, I-22100 Como, Italy

[5] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[6] Ctr Siciliano Fis Nucl & Strut Mat, I-95123 Catania, Italy

[7] Ist Nazl Fis Nucl, Sez Catania, I-95123 Catania, Italy

[8] INFN, Sez Pavia, I-27100 Pavia, Italy

[9] Dipartimento Fis, I-27100 Pavia, Italy

来源：

PHYSICAL REVIEW A | 2013年 / 88卷 / 04期

关键词：

INFORMATION; ENTANGLEMENT; TRANSMISSION;

D O I：

10.1103/PhysRevA.88.042337

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study information transmission over a fully correlated amplitude damping channel acting on two qubits. We derive the single-shot classical channel capacity and show that entanglement is needed to achieve the channel best performance. We discuss the degradability properties of the channel and evaluate the quantum capacity for any value of the noise parameter. We finally compute the entanglement-assisted classical channel capacity.

引用

页数：15

共 51 条

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