Transport of quantum excitations via local and nonlocal fluctuations
Quantum Physics
2015-06-11 v1 Other Condensed Matter
Abstract
In quantum systems, one usually seeks to minimize dephasing noise and disorder. The efficiency of transport in a quantum system is usually degraded by the presence of noise and disorder. However, it has been shown that the combination of the two can lead to significantly more efficiency than each by itself. Here, we consider how the addition of nonlocal noise, in the form of incoherent hopping, affects the transport efficiency. We show that incoherent hopping introduces additional local extrema in the efficiency function and investigate the crossover from a quantum random walk to a classical random walk.
Keywords
Cite
@article{arxiv.1502.03328,
title = {Transport of quantum excitations via local and nonlocal fluctuations},
author = {M. Zhang and Tony E. Lee and H. R. Sadeghpour},
journal= {arXiv preprint arXiv:1502.03328},
year = {2015}
}