Role of quantum coherence in chromophoric energy transport

Details Role of quantum coherence in chromophoric energy transport Role of quantum coherence in chromophoric energy transport

2008-06-28

arxiv.org/abs/0806.4725v2

Journal of Physical Chemistry B 113, 9942 (2009)

Physics

Quantum Physics

5 pages, 3 figures, included static disorder, correlated environment

Scientific paper

10.1021/jp901724d

The role of quantum coherence and the environment in the dynamics of excitation energy transfer is not fully understood. In this work, we introduce the concept of dynamical contributions of various physical processes to the energy transfer efficiency. We develop two complementary approaches, based on a Green's function method and energy transfer susceptibilities, and quantify the importance of the Hamiltonian evolution, phonon-induced decoherence, and spatial relaxation pathways. We investigate the Fenna-Matthews-Olson protein complex, where we find a contribution of coherent dynamics of about 10% and of relaxation of 80%.

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