Strong coupling between Tamm plasmon polariton and two dimensional semiconductor excitons

TL;DR

This paper demonstrates strong room-temperature coupling between 2D semiconductor excitons and Tamm plasmon polaritons, evidenced by a 54 meV Rabi splitting, advancing ultrathin polariton device development.

Contribution

It reports the first observation of strong coupling between 2D TMDC excitons and Tamm plasmon polaritons at room temperature.

Findings

Observed 54 meV Rabi splitting at room temperature.

Confirmed strong coupling via differential reflectivity spectra.

Theoretical simulation matches experimental results.

Abstract

Two dimensional (2D) semiconductor materials of transition-metal dichalcogenides (TMDCs) manifest many peculiar physical phenomena in the light-matter interaction. Due to their ultrathin property, strong interaction with light and the robust excitons at room temperature, they provide a perfect platform for studying the physics of strong coupling in low dimension and at room temperature. Here we report the strong coupling between 2D semiconductor excitons and Tamm plasmon polaritons (TPPs). We observe a Rabi splitting of about 54 meV at room temperature by measuring the angle resolved differential reflectivity spectra and simulate the theoretical results by using the transfer matrix method. Our results will promote the realization of the TPP based ultrathin polariton devices at room temperature.