Polaron-Polariton Assisted Thermally Activated Superradiance

TL;DR

This paper predicts a novel thermally activated superradiance in molecular aggregates within polaritonic environments, where emission is enhanced by increased temperature or exciton-phonon coupling, explained through a microscopic quantum theory.

Contribution

It introduces a microscopic theory combining quantum electrodynamics and polaron master equations to explain anomalous superradiance phenomena in polaritonic systems.

Findings

Enhanced collective emission with increased temperature or exciton-phonon coupling.

Counterintuitive superradiance behavior in polaritonic environments.

Microscopic theory capturing exciton-phonon-polariton interplay.

Abstract

We predict an anomalous thermally activated superradiance in molecular aggregates within polaritonic environments. In contrast to free space, the collective emission is enhanced when either the exciton-phonon coupling or the temperature increases. This counterintuitive phenomenon is captured by a microscopic theory that combines macroscopic quantum electrodynamics with a modified polaron quantum master equation approach, revealing a nontrivial interplay among excitons, phonons, and polaritons.