Quantum synchronization of two Van der Pol oscillators

Abstract

We study synchronization of two dissipatively coupled Van der Pol oscillators in the quantum regime. Due to quantum noise strict frequency locking is absent and is replaced by a crossover from weak to strong frequency entrainment. We discuss the differences to the behavior of one quantum Van der Pol oscillator subject to an external drive. Moreover, we describe a possible experimental realization of two coupled quantum van der Pol oscillators in an optomechanical setting.

8 pages, 5 figures, submitted to the topical issue "Quantum and Hybrid Mechanical Systems" in Annalen der Physik

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