Hybridized exciton-polariton resonances in core-shell nanoparticles

TL;DR

This paper explores how hybrid exciton-polariton resonances in core-shell nanoparticles can be engineered to control light at nanoscale, using theoretical models to understand mode hybridization and frequency tuning.

Contribution

It introduces a theoretical approach to achieve hybridisation of surface exciton-polaritons in nanostructures for enhanced light manipulation.

Findings

Hybrid modes can be tuned via nanostructuring.

Frequency shifts depend on material and geometry.

Hybridisation enhances light confinement at nanoscale.

Abstract

The goal of nanophotonics is to control and manipulate light at length scales below the diffraction limit. Typically nanostructured metals are used for this purpose, light being confined by exploiting the surface plasmon-polaritons such structures support. Recently excitonic (molecular) materials have been identified as an alternative candidate material for nanophotonics. Here we use theoretical modelling to explore how hybridisation of surface exciton-polaritons can be achieved through appropriate nanostructuring. We focus on the extent to which the frequency of the hybridised modes can be shifted with respect to the underlying material resonances.