Dynamics of a polariton condensate transistor switch

TL;DR

This paper investigates the real-time operation of a polariton condensate transistor switch, demonstrating control over polariton flow using optical pulses, supported by experimental data and theoretical simulations.

Contribution

It introduces a novel polariton transistor switch controlled by optical pulses, combining experimental time-resolved measurements with generalized Gross-Pitaevskii equation simulations.

Findings

Successful control of polariton flow with a weak gate pulse

Agreement between experimental results and theoretical simulations

Demonstration of a polariton transistor switch operation

Abstract

We present a time-resolved study of the logical operation of a polariton condensate transistor switch. Creating a polariton condensate (source) in a GaAs ridge-shaped microcavity with a non-resonant pulsed laser beam, the polariton propagation towards a collector, at the ridge edge, is controlled by a second weak pulse (gate), located between the source and the collector. The experimental results are interpreted in the light of simulations based on the generalized Gross-Pitaevskii equation, including incoherent pumping, decay and energy relaxation within the condensate.