Quantum stochastic synchronization |
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Authors: | Goychuk Igor Casado-Pascual Jesús Morillo Manuel Lehmann Jörg Hänggi Peter |
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Institution: | Institut für Physik, Universit?t Augsburg, Universit?tsstrasse 1, D-86135 Augsburg, Germany. |
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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. |
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