Bright cavity polariton solitons

TL;DR

This paper demonstrates the existence of stable bright cavity polariton solitons in semiconductor microcavities with tailored dispersion, and proposes a method to confine them transversely using cavity detuning modifications.

Contribution

It introduces the concept of stable bright microcavity solitons supported by repulsive nonlinearity and proposes a waveguide technique for their transverse localization.

Findings

Stable one-dimensional bright polariton solitons identified.

A method to create soliton waveguides via cavity detuning proposed.

Solitons are supported only within specific boundary conditions.

Abstract

The lower branch of the dispersion relation of exciton polaritons in semiconductor microcavities, operating in the strong-coupling regime, contains sections of both positive and negative curvature along one spatial direction. We show that this leads to the existence of stable one-dimensional bright microcavity solitons supported by the repulsive polariton nonlinearity. To achieve localization along the second transverse direction we propose to create a special soliton waveguide by changing the cavity detuning and hence the boundary of the soliton existence in such a way that the solitons are allowed only within the stripe of the desired width.