Microcavity with saturable nonlinearity under simultaneous resonant and nonresonant pumping: multistability, Hopf bifurcations and chaotic behaviour

TL;DR

This paper investigates the complex dynamics of an exciton-polariton microcavity with saturable nonlinearity under combined resonant and non-resonant pumping, revealing multistability, Hopf bifurcations, and chaos.

Contribution

It introduces a detailed analysis of multistability and chaotic behavior in a microcavity with saturable nonlinearity under simultaneous pumping, highlighting new dynamical regimes.

Findings

Multistability due to saturation of excitonic absorption.

Stable Rabi-type oscillations observed in stationary pump regime.

Transition to chaos via Hopf bifurcations by tuning the electrical pump.

Abstract

We studied optical response of microcavity non-equilibrium exciton-polariton Bose-Einstein condensate with saturable nonlinearity under simultaneous resonant and non-resonant pumping. We demonstrated the emergence of multistabile behavior due to the satutration of the excitonic absorbtion. Stable periodic Rabi- type oscillations of the excitonic and photonic condensate components in the regime of the stationary pump and their transition to the chaotic dynamics through the cascade of Hopf bifurcations by tuning of the electrical pump are revealed.