Non-Markovian stochastic description of quantum transport in photosynthetic systems

Abstract

We analyze several aspects of the transport dynamics in the LH1-RC core of purple bacteria, which consists basically in a ring of antenna molecules that transport the energy into a target molecule, the reaction center, placed in the center of the ring. We show that the periodicity of the system plays an important role to explain the relevance of the initial state in the transport efficiency. This picture is modified, and the transport enhanced for any initial state, when considering that molecules have different energies, and when including their interaction with the environment. We study this last situation by using stochastic Schr{ö}dinger equations, both for Markovian and non-Markovian type of interactions.

21 pages, 5 figures

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• A Knob for Markovianity
• Dephasing dynamics of an impurity coupled to an anharmonic environment
• Stochastic Schrödinger equations and conditional states: a general Non-Markovian quantum electron transport simulator for THz electronics
• Ultrastrong coupling limit to quantum mean force Gibbs state for anharmonic environment
• Including arbitrary geometric correlations into one-dimensional time-dependent Schrödinger equations