Localization properties and high-fidelity state transfer in hopping models with correlated disorder

被引：10

作者：

Almeida, G. M. A. ^{[1
]}

Mendes, C. V. C. ^{[1
]}

Lyra, M. L. ^{[1
]}

de Moura, F. A. B. F. ^{[1
]}

机构：

[1] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, AL, Brazil

来源：

ANNALS OF PHYSICS | 2018年 / 398卷

关键词：

Correlated disorder; Localization; Quantum-state transfer; METAL-INSULATOR-TRANSITION; DELOCALIZATION TRANSITION; DIMENSIONAL SYSTEMS; ANDERSON MODEL; MOBILITY EDGE; ABSENCE; DYNAMICS;

D O I：

10.1016/j.aop.2018.09.003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate a tight-binding chain featuring diagonal and off-diagonal disorder, these being modeled through the long-range-correlated fractional Brownian motion. Particularly, by employing exact diagonalization methods, we evaluate how the eigenstate spectrum of the system and how its related single-particle dynamics respond to both competing sources of disorder. Moreover, we report the possibility of carrying out efficient end-to-end quantum-state transfer protocols even in the presence of such generalized disorder due to the appearance of extended states around the middle of the band in the limit of strong correlations. (C) 2018 Elsevier Inc. All rights reserved.

引用

页码：180 / 189

页数：10

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