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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Thursday, 14 December 2006
(at 15:15 in room Phy 5.0.21)
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Quantum stochastic synchronization

Igor A. Goychuk


University of Augsburg
  Germany  






We study, within the spin-boson dynamics, the synchronization of a quantum tunnelling system with an external, time-periodic driving signal [1]. As a main result we find that at a sufficiently large system-bath coupling strength (i.e. for a friction strength α>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 tunnelling rate. As an application evidencing the effect, we consider the charge transfer dynamics in molecular complexes.
[1] I. Goychuk, J. Casado-Pascual, M. Morillo, J. Lehmann, P. Hänggi, Phys. Rev. Lett. 97, 210601 (2006).

Invited by M. Grifoni

Within the Graduiertenkolleg Nichtlinearität und Nichtgleichgewicht in kondensierter Materie, GRK 638

last modified: 2018.10.24 Mi
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