# Parity solitons in nonresonantly driven-dissipative condensate channels

## TL;DR

This paper investigates parity solitons in driven-dissipative exciton-polariton condensates, revealing how symmetric pumping leads to parity-specific condensation, competition between parities, and the emergence of topologically stable defects with potential for robust information encoding.

## Contribution

It provides a combined analytical and numerical study of parity states and defect dynamics in nonresonantly pumped polariton channels, highlighting new topological defect phenomena.

## Key findings

- Lowest condensation threshold has definite parity due to symmetric pumping
- Higher pump intensities cause parity competition and quenching
- Topologically stable defects propagate along the condensate with repulsive interactions

## Abstract

We study analytically and numerically the condensation of a driven-dissipative exciton-polariton system using symmetric nonresonant pumping geometries. We show that the lowest condensation threshold solution carries a definite parity as a consequence of the symmetric excitation profile. At higher pump intensities competition between the two parities can result in critical quenching of one and saturation of the other. Using long pump channels, we show that the competition of the condensate parities gives rise to a different type of topologically stable defect propagating indefinitely along the condensate. The defects display repulsive interactions and are characterized by a sustained wavepacket carrying a pair of opposite parity domain walls in the condensate channel.