Synchronization in PT-symmetric optomechanical resonators

TL;DR

This paper introduces a PT-symmetric structure to synchronize two mechanical modes in coupled optomechanical resonators, revealing that lower coupling and certain noise levels can enhance synchronization, opening new research avenues.

Contribution

It presents a novel synchronization mechanism in PT-symmetric optomechanical systems, demonstrating control over synchronization degree via coupling strength and noise effects.

Findings

Synchronization degree increases with decreasing coupling strength.

Noise can enhance synchronization under specific conditions.

PT-symmetric structures enable new synchronization control methods.

Abstract

Synchronization has great impacts in various fields such as self-clocking, communication, neural networks, etc. Here we present a mechanism of synchronization for two mechanical modes in two coupled optomechanical resonators by introducing the so-called PT-symmetric structure. It is shown that the degree of synchronization between the two far-off-resonant mechanical modes can be increased by decreasing the coupling strength between the two optomechanical resonators. Additionally, when we consider the stochastic noises in the optomechanical resonators, we find that more noises can enhance the degree of synchronization of the system under particular parameter regime. Our results open up the new dimension of research for PT-symmetric systems and synchronization.