Localization of coherent exciton transport in phase space

Details Localization of coherent exciton transport in phase space Localization of coherent exciton transport in phase space

2007-01-08

arxiv.org/abs/quant-ph/0701034v2

Phys. Rev. E 75, 031121 (2007)

Physics

Quantum Physics

8 pages, 9 figures. slight revision of the text and addition of a new figure. to be published in Phys. Rev. E

Scientific paper

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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