Synchronization in rotating supersolids

TL;DR

This paper demonstrates that rotating supersolids exhibit synchronization of their crystal motion to external frequencies due to vortex nucleation, providing a new way to probe quantum many-body systems.

Contribution

It introduces a theoretical framework linking synchronization phenomena to vortex nucleation in supersolids, validated by experimental data, offering a novel probing method for quantum systems.

Findings

Synchronization occurs at a critical frequency related to vortex nucleation.

The model accurately predicts experimental observations.

Synchronization reveals the dual solid-superfluid nature of supersolids.

Abstract

Synchronization is ubiquitous in nature at various scales and fields. This phenomenon not only offers a window into the intrinsic harmony of complex systems, but also serves as a robust probe for many-body quantum systems. One such system is a supersolid: an exotic state that is simultaneously superfluid and solid. Here, we show that putting a supersolid under rotation leads to a synchronization of the crystal's motion to an external driving frequency triggered by quantum vortex nucleation, revealing the system's dual solid-superfluid response. Benchmarking the theoretical framework against experimental observations, we exploit this model as a novel method to investigate the critical frequency required for vortex nucleation. Our results underscore the utility of synchronization as a powerful probe for quantum systems.