Observation of hybrid Tamm-plasmon exciton-polaritons with GaAs quantum wells and a MoSe2 monolayer

TL;DR

This paper reports the experimental observation of hybrid Tamm-plasmon exciton-polaritons formed by coupling GaAs quantum wells and a MoSe2 monolayer within a microcavity, demonstrating strong light-matter interactions.

Contribution

It introduces a novel hybrid polariton system combining quantum wells and a monolayer, with detailed experimental and theoretical analysis of their coupling.

Findings

Observation of hybrid Tamm-plasmon exciton-polaritons

Momentum-resolved photoluminescence and reflectivity evidence

Thermodynamic model accurately describes energy and k-vector distribution

Abstract

Strong light matter coupling between excitons and microcavity photons, as described in the framework of cavity quantum electrodynamics, leads to the hybridization of light and matter excitations. The regime of collective strong coupling arises, when various excitations from different host media are strongly coupled to the same optical resonance. This leads to a well-controllable admixture of various matter components in three hybrid polariton modes. Here, we study a cavity device with four embedded GaAs quantum wells hosting excitons that are spectrally matched to the A-valley exciton resonance of a MoSe2 monolayer. The formation of hybrid polariton modes is evidenced in momentum resolved photoluminescence and reflectivity studies. We describe the energy and k-vector distribution of exciton-polaritons along the hybrid modes by a thermodynamic model, which yields a very good agreement with the experiment.