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Quantum Stochastic Synchronization

Igor Goychuk·Jesus Casado-Pascual·Manuel Morillo·Joerg Lehmann·Peter Hanggi
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Abstract

We study within the spin-boson dynamics the synchronization of quantum tunneling with an external periodic driving signal. As a main result we find that at a sufficiently large system-bath coupling strength (Kondo parameter a>1) the thermal noise plays a constructive role in yielding both a frequency and a phase synchronization in a symmetric two-level system. Such riveting synchronization occurs when the driving frequency supersedes the zero temperature tunneling rate. As an application evidencing the effect, we consider a charge transfer dynamics in molecular complexes.

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Igor Goychuk, Jesus Casado-Pascual, Manuel Morillo, Joerg Lehmann, Peter Hanggi. 2006-03-15. Quantum Stochastic Synchronization. https://doi.org/10.1103/physrevlett.97.210601

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