Localization of coherent exciton transport in phase space
Quantum Physics
2007-05-23 v2 Statistical Mechanics
Abstract
We study numerically the dynamics of excitons on discrete rings in the presence of static disorder. Based on continuous-time quantum walks we compute the time evolution of the Wigner function (WF) both for pure diagonal (site) disorder, as well as for diagonal and off-diagonal (site and transfer) disorder. In both cases, large disorder leads to localization and destroys the characteristic phase space patterns of the WF found in the absence of disorder.
Cite
@article{arxiv.quant-ph/0701034,
title = {Localization of coherent exciton transport in phase space},
author = {Oliver Muelken and Veronika Bierbaum and Alexander Blumen},
journal= {arXiv preprint arXiv:quant-ph/0701034},
year = {2007}
}
Comments
8 pages, 9 figures. slight revision of the text and addition of a new figure. to be published in Phys. Rev. E