Long-distance synchronization of unidirectionally cascaded optomechanical systems

TL;DR

This paper proposes a scheme for controllable long-distance synchronization of dissimilar optomechanical systems via fiber coupling, demonstrating synchronization over tens of kilometers and scalability to three systems through numerical simulations.

Contribution

It introduces a novel method for long-distance synchronization of optomechanical systems using fiber coupling, including analysis of scalability and effects of fiber attenuation.

Findings

Synchronization can be achieved over tens of kilometers.

The scheme allows control over synchronization and unsynchronization.

Scalability to three systems is demonstrated.

Abstract

Synchronization is of great scientific interest due to the abundant applications in a wide range of systems. We propose a scheme to achieve the controllable long-distance synchronization of two dissimilar optomechanical systems, which are unidirectionally coupled through a fiber with light. Synchronization, unsynchronization, and the dependence of the synchronization on driving laser strength and intrinsic frequency mismatch are studied based on the numerical simulation. Taking the fiber attenuation into account, it's shown that two mechanical resonators can be synchronized over a distance of tens of kilometers. In addition, we also analyze the unidirectional synchronization of three optomechanical systems, demonstrating the scalability of our scheme.