Optical bistability under non-resonant excitation in spinor polariton condensates

TL;DR

This paper demonstrates optical bistability in spinor polariton condensates under non-resonant excitation, supported by numerical modeling, with potential applications in spin switches and memory devices.

Contribution

It introduces the first observation of spin bistability in polariton condensates without external bias, supported by a Ginzburg-Landau model.

Findings

Bistability persists over sweep times from 10 microseconds to 1 second.

Numerical model qualitatively matches experimental results.

Potential for spin switch and memory applications.

Abstract

We realise bistability in the spinor of polariton condensates under non-resonant optical excitation and in the absence of biasing external fields. Numerical modelling of the system using the Ginzburg-Landau equation with an internal Josephson coupling between the two spin components of the condensate qualitatively describes the experimental observations. We demonstrate that polariton spin bistability persists for sweep times in the range of $[10 \mu sec,1 sec]$ offering a promising route to spin switches and spin memory elements.