Cavity-mediated exciton hopping in a dielectrically engineered polariton system

TL;DR

This paper demonstrates how dielectric engineering in 2D semiconductors enables long-range exciton hopping within polariton systems, advancing the development of polaritonic networks and quantum simulations.

Contribution

It introduces a method to create mesoscopic exciton-polariton domains with effective long-range hopping through dielectric environment control.

Findings

Realized mesoscopic exciton-polariton domains in structured dielectric environments.

Established effective long-range exciton hopping in cavity-coupled systems.

Paves the way for polaritonic networks and quantum simulations using 2D semiconductors.

Abstract

Exciton-polaritons - coherently hybridized states of excitons and photons - are instrumental for solid-state nonlinear optics and quantum simulations. To enable engineered polariton energy landscapes and interactions, local control over the particle-like states can be achieved by tuning the properties of the exciton constituent. Monolayer transition metal dichalcogenides stand out in this respect, as they readily allow for a deterministic, flexible and scalable control of excitons, and thus of hybrid exciton-polaritons, via environmental dielectric engineering. Here, we demonstrate the realization of mesoscopic exciton-polariton domains in a structured dielectric exciton environment, and establish an effective long-range exciton hopping in the dispersive regime of cavity-coupling. Our results represent a crucial step toward interacting polaritonic networks and quantum simulations in exciton-polariton lattices based on dielectrically tailored two-dimensional semiconductors.