Entanglement-enhanced information transmission over a quantum channel with correlated noise

被引:230
|
作者
Macchiavello, C
Palma, GM
机构
[1] Ist Nazl Fis Mat, I-27100 Pavia, Italy
[2] Dipartimento Fis A Volta, I-27100 Pavia, Italy
[3] Ist Nazl Fis Mat, NEST, I-90123 Palermo, Italy
[4] Dipartimento Sci Fis & Astron, I-90123 Palermo, Italy
来源
PHYSICAL REVIEW A | 2002年 / 65卷 / 05期
关键词
D O I
10.1103/PhysRevA.65.050301
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We show that entanglement is a useful resource to enhance the mutual information of the depolarizing channel when the noise on consecutive uses of the channel has some partial correlations. We obtain a threshold in the degree of memory above which a higher amount of classical information is transmitted with entangled signals.
引用
收藏
页数:4
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