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Localization of coherent exciton transport in phase space

Oliver Muelken·Veronika Bierbaum·Alexander Blumen
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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.

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Oliver Muelken, Veronika Bierbaum, Alexander Blumen. 2007-02-16. Localization of coherent exciton transport in phase space. https://arxiv.org/abs/quant-ph/0701034

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