Quantum $\phi$-synchronization in coupled optomechanical system with periodic modulation

Abstract

Based on the concepts of quantum synchronization and quantum phase synchronization proposed by A. Mari \textit{et al.} in Phys. Rev. Lett. 111, 103605 (2013), we introduce and characterize the measure of a more generalized quantum synchronization called quantum $\phi$-synchronization under which the pairs of variables have the same amplitude and possess the same $\phi$ phase shift. Naturally, quantum synchronization and quantum anti-synchronization become special cases of quantum $\phi$-synchronization. Their relations and differences are also discussed. To illustrate these theories, we investigate the quantum $\phi$-synchronization and quantum phase synchronization phenomena of two coupled optomechanical systems with periodic modulation and show that quantum $\phi$-synchronization is more general as a measure of synchronization. We also show the phenomenon of quantum anti-synchronization when $\phi =\pi$.

arXiv comment6 pages, 5 figures, comments are wellcome

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