Ring dark solitons in microcavity polariton condensates

TL;DR

This paper demonstrates how to create and stabilize ring dark solitons in microcavity polariton condensates by introducing a ring-shaped defect, enabling their potential experimental realization.

Contribution

It proposes a novel method to stabilize ring dark solitons in microcavity polariton condensates using a ring defect potential.

Findings

Stable RDSs can be achieved with a ring defect.

The stability depends on defect strength and width.

Stable RDSs are attainable at various pump powers.

Abstract

A ring dark soliton is a dark soltion occurring in higher dimensions. It is still unknown in microcavity-polariton condensates due to its instability. We find that a stable RDS cannot exist in a MPC without a defect. We then propose a way to create a stable RDS in a MPC by adding a defect with a ring structure to the system. A RDS pinned by the defect potential becomes stable. For various pump powers, we also investigate the stable regime of the RDS by tuning the strength and width of the defect potential. We conclude that the stable RDSs can be obtained.