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Disorder-Assisted Exciton Transport

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Scholak T., Zech T., Wellens T., Buchleitner A.
Acta Physica Polonica A
|
2011
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vol. 120
|
issue 6A
A-89-A-94
EN
We discuss the possibly constructive role of disorder for the optimization of exciton transport in the FMO (Fenna-Matthews-Olson) light harvesting complex. Our analysis, which models the FMO as a 3D random graph, demonstrates the existence of a small fraction of optimal, though highly asymmetric, non-periodic conformations, which yield near-to-optimal coherent excitation transport. We argue that, on transient time scales, such quantum interference enhanced transport does always better than stochastic activation.
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