Quantum data processing and error correction

被引：518

作者：

Schumacher, B

Nielsen, MA

机构：

[1] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA

[2] KENYON COLL, DEPT PHYS, GAMBIER, OH 43022 USA

来源：

PHYSICAL REVIEW A | 1996年 / 54卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.54.2629

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper investigates properties of noisy quantum information channels. We define a quantity called coherent information, which measures the amount of quantum information conveyed in the noisy channel. This quantity can never be increased by quantum information processing, and it yields a simple necessary and sufficient condition for the existence of perfect quantum error correction.

引用

页码：2629 / 2635

页数：7

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