Exact stochastic unraveling of an optical coherence dynamics by cumulant expansion

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10283850" target="_blank" >RIV/00216208:11320/14:10283850 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4898354" target="_blank" >http://dx.doi.org/10.1063/1.4898354</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4898354" target="_blank" >10.1063/1.4898354</a>

Result language
angličtina
Original language name
Exact stochastic unraveling of an optical coherence dynamics by cumulant expansion
Original language description
A numerically exact Monte Carlo scheme for calculation of open quantum system dynamics is proposed and implemented. The method consists of a Monte Carlo summation of a perturbation expansion in terms of trajectories in Liouville phase-space with respectto the coupling between the excited states of the molecule. The trajectories are weighted by a complex decoherence factor based on the second-order cumulant expansion of the environmental evolution. The method can be used with an arbitrary environment characterized by a general correlation function and arbitrary coupling strength. It is formally exact for harmonic environments, and it can be used with arbitrary temperature. Time evolution of an optically excited Frenkel exciton dimer representing a molecular exciton interacting with a charge transfer state is calculated by the proposed method. We calculate the evolution of the optical coherence elements of the density matrix and linear absorption spectrum, and compare them with the pred
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

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