Phase-controlled bistability of a dark soliton train in a polariton fluid

TL;DR

This paper demonstrates how phase control in a polariton fluid induces bistability in dark soliton trains, revealing complex nonlinear dynamics in driven-dissipative quantum fluids.

Contribution

It introduces a new method to control soliton bistability via phase twist in a polariton fluid, advancing understanding of nonlinear phenomena in driven-dissipative systems.

Findings

Phase twist induces bistability in dark soliton trains.

Transition from interference fringes to soliton trains occurs at specific interaction energies.

Experimental evidence of phase-controlled bistable behavior in polariton fluids.

Abstract

We use a one-dimensional polariton fluid in a semiconductor microcavity to explore the rich nonlinear dynamics of counter-propagating interacting Bose fluids. The intrinsically driven-dissipative nature of the polariton fluid allows to use resonant pumping to impose a phase twist across the fluid. When the polariton-polariton interaction energy becomes comparable to their kinetic energy, linear interference fringes transform into a train of solitons. A novel type of bistable behavior controlled by the phase twist across the fluid is experimentally evidenced.