Abstract.
Using the methods of quantum trajectories we study numerically a quantum dissipative system with periodic driving which exhibits synchronization phenomenon in the classical limit. The model allows to analyze the effects of quantum fluctuations on synchronization and establish the regimes where the synchronization is preserved in a quantum case (quantum synchronization). Our results show that at small values of Planck constant ħ the classical devil's staircase remains robust with respect to quantum fluctuations while at large ħ values synchronization plateaus are destroyed. Quantum synchronization in our model has close similarities with Shapiro steps in Josephson junctions and it can be also realized in experiments with cold atoms.
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Zhirov, O., Shepelyansky, D. Quantum synchronization. Eur. Phys. J. D 38, 375–379 (2006). https://doi.org/10.1140/epjd/e2006-00011-9
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DOI: https://doi.org/10.1140/epjd/e2006-00011-9