Stochastic Formation of Polariton Condensates in Two Degenerate Orbital States

TL;DR

This paper investigates the stochastic formation and phase dynamics of polariton condensates in degenerate orbital states within a honeycomb lattice, revealing phase order and intensity anticorrelation phenomena.

Contribution

It demonstrates the existence of degenerate vortex-antivortex lattice states and characterizes their phase and intensity correlations in polariton condensates.

Findings

Observed degenerate condensates at K and K' points with ~0.3 meV linewidth.

Measured vortex-antivortex lattice phase order of the order parameter.

Detected intensity anticorrelation between condensates at K and K' points.

Abstract

We explore the exciton-polariton condensation in the two degenerate orbital states. In the honeycomb lattice potential, at the third band we have two degenerate vortex-antivortex lattice states at the inequivalent K and K'-points. We have observed energetically degenerate condensates within the linewidth ~ 0.3 meV, and directly measured the vortex-antivortex lattice phase order of the order parameter. We have also observed the intensity anticorrelation between polariton condensates at the K- and K'-points. We relate this intensity anticorrelation to the dynamical feature of polariton condensates induced by the stochastic relaxation from the common particle reservoir.