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Title: Communication: Exciton-phonon information flow in the energy transfer process of photosynthetic complexes

Abstract

Non-Markovian and nonequilibrium phonon effects are believed to be key ingredients in the energy transfer in photosynthetic complexes, especially in complexes which exhibit a regime of intermediate exciton–phonon coupling. In this work, we utilize a recently developed measure for non-Markovianity to elucidate the exciton–phonon dynamics in terms of the information flow between electronic and vibrational degrees of freedom. We study the measure in the hierarchical equation of motion approach which captures strong coupling effects and nonequilibrium molecular reorganization. We propose an additional trace distance measure for the information flow that could be extended to other master equations. We find that for a model dimer system and for the Fenna–Matthews–Olson complex the non-Markovianity is significant under physiological conditions.

Authors:
;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC); Center for Excitonics (CE)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1065354
DOE Contract Number:  
SC0001088
Resource Type:
Journal Article
Journal Name:
J. Chem. Phys.
Additional Journal Information:
Journal Volume: 134; Related Information: CE partners with Massachusetts Institute of Technology (lead); Brookhaven National Laboratory; Harvard University
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; solar (photovoltaic), solid state lighting, photosynthesis (natural and artificial), charge transport, optics, synthesis (novel materials), synthesis (self-assembly), synthesis (scalable processing)

Citation Formats

Rebentrost, P., and Aspuru-Guzik, Alan. Communication: Exciton-phonon information flow in the energy transfer process of photosynthetic complexes. United States: N. p., 2011. Web. doi:10.1063/1.3563617.
Rebentrost, P., & Aspuru-Guzik, Alan. Communication: Exciton-phonon information flow in the energy transfer process of photosynthetic complexes. United States. doi:10.1063/1.3563617.
Rebentrost, P., and Aspuru-Guzik, Alan. Mon . "Communication: Exciton-phonon information flow in the energy transfer process of photosynthetic complexes". United States. doi:10.1063/1.3563617.
@article{osti_1065354,
title = {Communication: Exciton-phonon information flow in the energy transfer process of photosynthetic complexes},
author = {Rebentrost, P. and Aspuru-Guzik, Alan},
abstractNote = {Non-Markovian and nonequilibrium phonon effects are believed to be key ingredients in the energy transfer in photosynthetic complexes, especially in complexes which exhibit a regime of intermediate exciton–phonon coupling. In this work, we utilize a recently developed measure for non-Markovianity to elucidate the exciton–phonon dynamics in terms of the information flow between electronic and vibrational degrees of freedom. We study the measure in the hierarchical equation of motion approach which captures strong coupling effects and nonequilibrium molecular reorganization. We propose an additional trace distance measure for the information flow that could be extended to other master equations. We find that for a model dimer system and for the Fenna–Matthews–Olson complex the non-Markovianity is significant under physiological conditions.},
doi = {10.1063/1.3563617},
journal = {J. Chem. Phys.},
number = ,
volume = 134,
place = {United States},
year = {2011},
month = {3}
}