The optimization topography of exciton transport
Physikalisches Institut, Albert-Ludwigs-Universität Freiburg - Hermann-Herder-Straße 3, D-79104 Freiburg, Germany, EU
2 Chemical Physics Theory Group, Department of Chemistry and Center for Quantum Information and Quantum Control, University of Toronto - Toronto M5S 3H6, Canada
Accepted: 12 August 2011
Stunningly large exciton transfer rates in the light harvesting complex of photosynthesis, together with recent experimental 2D spectroscopic data, have spurred a vivid debate on the possible quantum origin of such efficiency. Here we show that configurations of a random molecular network that optimize constructive quantum interference from input to output site yield systematically shorter transfer times than classical transport induced by ambient dephasing noise.
PACS: 05.60.-k – Transport processes / 87.15.hj – Transport dynamics / 03.65.Yz – Decoherence; open systems; quantum statistical methods
© EPLA, 2011