Dynamic coherence in excitonic molecular complexes under various excitation conditions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10283846" target="_blank" >RIV/00216208:11320/14:10283846 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.chemphys.2014.05.008" target="_blank" >http://dx.doi.org/10.1016/j.chemphys.2014.05.008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemphys.2014.05.008" target="_blank" >10.1016/j.chemphys.2014.05.008</a>

Result language
angličtina
Original language name
Dynamic coherence in excitonic molecular complexes under various excitation conditions
Original language description
We investigate the relevance of dynamic quantum coherence in the energy transfer efficiency of molecular aggregates. We derive the time evolution of the density matrix for an open quantum system excited by light or by a neighboring antenna. Unlike in theclassical case, the quantum description does not allow for a formal decomposition of the dynamics into sudden jumps in an observable quantity - an expectation value. Rather, there is a natural finite time-scale associated with the excitation process. Wepropose a simple experiment to test the influence of this time scale on the yield of photosynthesis. We demonstrate, using typical parameters of the Fenna-Matthews-Olson (FMO) complex and a typical energy transfer rate from the chlorosome baseplate, that dynamic coherences are averaged out in the complex even when the FMO model is completely free of all dissipation and dephasing.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
<a href="/en/project/GA14-25752S" target="_blank" >GA14-25752S: Microscopic environmental determinants and self-regulation of photosynthetic energy transfer</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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