title: Quantum stochastic synchronization.
abstract: We study, within the spin-boson dynamics, the synchronization of a quantum tunneling system with an external, time-periodic driving signal. As a main result, we find that at a sufficiently large system-bath coupling strength (i.e., for a friction strength alpha > 1) the thermal noise plays a constructive role in yielding forced synchronization. This noise-induced synchronization can occur when the driving frequency is larger than the zero-temperature tunneling rate. As an application evidencing the effect, we consider the charge transfer dynamics in molecular complexes.
authors.affiliation: Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86135 Augsburg, Germany.
authors.forename: Igor
authors.initials: I
authors.lastname: Goychuk
authors.forename: Jesús
authors.initials: J
authors.lastname: Casado-Pascual
authors.forename: Manuel
authors.initials: M
authors.lastname: Morillo
authors.forename: Jörg
authors.initials: J
authors.lastname: Lehmann
authors.forename: Peter
authors.initials: P
authors.lastname: Hänggi