Charge transfer dynamics in driven molecular ratchets: quantum Monte Carlo results and rate models

Charge transfer dynamics is studied in a ratchet-type molecular wire subject to finite frequency driving. Numerically exact data are obtained within the path integral Monte Carlo approach over the full transient time regime until a stationary net population imbalance has been established. This allows for a quantitative comparison with the master equation approaches and, in particular, underlines the usefulness of these rate models.