Two-dimensional semiconductors in the regime of strong light-matter coupling

TL;DR

This paper reviews the emerging field of strong light-matter coupling in two-dimensional transition metal dichalcogenide monolayers, highlighting their optical properties, integration in heterostructures, and potential for advanced photonic applications.

Contribution

It provides a comprehensive overview of recent experimental results and discusses future opportunities and challenges in the field of 2D semiconductors under strong light-matter coupling.

Findings

Strong excitonic optical transitions in monolayers.

Potential for resonance with microcavities and nanostructures.

Opportunities for engineering novel photonic devices.

Abstract

The optical properties of transition metal dichalcogenide monolayers are widely dominated by excitons, Coulomb-bound electron-hole pairs. These quasi-particles exhibit giant oscillator strength and give rise to narrow-band, well-pronounced optical transitions, which can be brought into resonance with electromagnetic fields in microcavities and plasmonic nanostructures. Due to the atomic thinness and robustness of the monolayers, their integration in van der Waals heterostructures provides unique opportunities for engineering strong light-matter coupling. We review first results in this emerging field and outline future opportunities and challenges.