Quantum data processing and error correction

被引：487
|
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
收藏
页码：2629 / 2635
页数：7
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