title: Non-Markovian quantum jumps in excitonic energy transfer.
abstract: 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 concepts to the non-Markovian regime. Within the NMQJ method, the Fenna-Matthew-Olson protein is investigated as a prototype for larger photosynthetic complexes.
authors.affiliation: Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St., Cambridge, Massachusetts 02138, USA. rebentr@fas.harvard.edu
authors.forename: Patrick
authors.initials: P
authors.lastname: Rebentrost
authors.forename: Rupak
authors.initials: R
authors.lastname: Chakraborty
authors.forename: Alán
authors.initials: A
authors.lastname: Aspuru-Guzik