Non-Markovian Quantum Jumps in Excitonic Energy Transfer

Details Non-Markovian Quantum Jumps in Excitonic Energy Transfer Non-Markovian Quantum Jumps in Excitonic Energy Transfer

2009-08-13

arxiv.org/abs/0908.1961v1

J. Chem. Phys. 131, 184102 (2009).

Physics

Quantum Physics

9 pages, 4 figures, submitted to Journal of Chemical Physics

Scientific paper

10.1063/1.3259838

We utilize the novel non-Markovian quantum jump (NMQJ) approach to stochastically simulate exciton dynamics derived from a time-convolutionless master equation. For relevant parameters and time scales, the time-dependent, oscillatory decoherence rates can have negative regions, a signature of non-Markovian behavior and of the revival of coherences. This can lead to non-Markovian population beatings for a dimer system at room temperature. We show that strong exciton-phonon coupling to low frequency modes can considerably modify transport properties. We observe increased exciton transport, which can be seen as an extension of recent environment-assisted quantum transport (ENAQT) concepts to the non-Markovian regime. Within the NMQJ method, the Fenna-Matthew-Olson protein is investigated as a prototype for larger photosynthetic complexes.

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