Multistability of a two component exciton-polariton fluid

TL;DR

This paper investigates the stability and multistability of a two-component exciton-polariton fluid under resonant excitation, revealing up to three stable states and tunable hysteresis loops using a generalized Gross-Pitaevskii model.

Contribution

It demonstrates the existence of multiple stable solutions in a two-component exciton-polariton system under specific pumping conditions, expanding understanding of multistability in such quantum fluids.

Findings

Up to three stable solutions can coexist for the same system parameters.

Multistability can be controlled and tuned via external laser parameters.

Hysteresis loops are achievable and tunable in the system.

Abstract

We study the stability of a multicomponent exciton-polariton fluid under resonant excitation within the linear response approximation of a generalized Gross-Pitaevskii equation. We show that, two spatially homogeneous and independently tunable pumping lasers produce, for the same values of the system parameters, up to three stable solutions. Three-stability is understood by noting that the cavity can be either little or highly populated and, in this second case, the largest part of the population lies in either one of the two components. Moreover, we show that easily tunable multistable hysteresis loops can be performed by the system.