Localization of coherent exciton transport in phase space.


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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@article{Mlken2007LocalizationOC, title={Localization of coherent exciton transport in phase space.}, author={Oliver M{\"{u}lken and Veronika Bierbaum and Alexander Blumen}, journal={Physical review. E, Statistical, nonlinear, and soft matter physics}, year={2007}, volume={75 3 Pt 1}, pages={031121} }