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arXiv · 1711.09383

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

Guilherme M. A. Almeida·Caio V. C. Mendes·Marcelo L. Lyra·Francisco A. B. F. de Moura
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Abstract

We investigate a tight-binding electronic chain featuring diagonal and off-diagonal disorder, these being modelled through the long-range-correlated fractional Brownian motion. Particularly, by employing exact diagonalization methods, we evaluate how the eigenstate spectrum of the system and 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.

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Guilherme M. A. Almeida, Caio V. C. Mendes, Marcelo L. Lyra, Francisco A. B. F. de Moura. 2017-11-26. Localization properties and high-fidelity state transfer in electronic hopping models with correlated disorder. https://doi.org/10.1016/j.aop.2018.09.003

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