Faithful state transfer through a quantum channel

被引：22

作者：

Paganelli, Simone

de Pasquale, Ferdinando

Giorgi, Gian Luca

机构：

[1] Univ Roma La Sapienza, Dept Fis, I-00185 Rome, Italy

[2] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy

[3] INFM, Ctr Stat Mech & Complex, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW A | 2006年 / 74卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.74.012316

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the possibility of realizing perfect quantum state transfer in mesoscopic devices. We discuss the case of the Fano-Anderson model extended to two impurities. For a channel with an infinite number of degrees of freedom, we obtain coherent behavior in the case of strong coupling or in weak coupling off resonance. For a finite number of degrees of freedom, coherent behavior is associated with weak coupling and resonance conditions. Finite-temperature and disorder effects are discussed.

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页数：9

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