TY - JOUR
T1 - Dynamical crossovers in Markovian exciton transport
AU - Hossein-Nejad, Hoda
AU - Olaya-Castro, Alexandra
AU - Fassioli, Francesca
AU - Scholes, Gregory D.
PY - 2013/8
Y1 - 2013/8
N2 - The large deviation theory has recently been applied to open quantum systems to uncover dynamical crossovers in the space of quantum trajectories associated to Markovian evolutions. Such dynamical crossovers are characterized by qualitative changes in the fluctuations of rare quantum jump trajectories, and have been observed in the statistics of coherently driven quantum systems. In this paper we investigate the counting statistics of the rare quantum trajectories of an undriven system undergoing a pure relaxation process, namely, Markovian exciton transport. We find that dynamical crossovers occur in systems with a minimum of three interacting molecules, and are strongly activated by exciton delocalization and interference. Our results illustrate how quantum features of the underlying system Hamiltonian can influence the statistical properties of energy transfer processes in a non-trivial manner.
AB - The large deviation theory has recently been applied to open quantum systems to uncover dynamical crossovers in the space of quantum trajectories associated to Markovian evolutions. Such dynamical crossovers are characterized by qualitative changes in the fluctuations of rare quantum jump trajectories, and have been observed in the statistics of coherently driven quantum systems. In this paper we investigate the counting statistics of the rare quantum trajectories of an undriven system undergoing a pure relaxation process, namely, Markovian exciton transport. We find that dynamical crossovers occur in systems with a minimum of three interacting molecules, and are strongly activated by exciton delocalization and interference. Our results illustrate how quantum features of the underlying system Hamiltonian can influence the statistical properties of energy transfer processes in a non-trivial manner.
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U2 - 10.1088/1367-2630/15/8/083056
DO - 10.1088/1367-2630/15/8/083056
M3 - Article
AN - SCOPUS:84883391170
SN - 1367-2630
VL - 15
JO - New Journal of Physics
JF - New Journal of Physics
M1 - 083056
ER -