Strong Coupling of Collection of Emitters on Hyperbolic Meta-Material

TL;DR

This paper investigates the potential for strong coupling between a collection of emitters and hyperbolic metamaterials, demonstrating that high emitter densities can achieve strong coupling detectable via reflectivity measurements.

Contribution

It introduces the concept that hyperbolic metamaterials can facilitate strong coupling with emitters at high densities, extending cavity QED principles to surface plasmon-like systems.

Findings

Strong coupling occurs at emitter densities above a critical threshold.

Reflectivity dip splitting indicates strong coupling, while shift indicates weak coupling.

Potential application in sensing active molecules at surfaces.

Abstract

Recently considerable effort is devoted to the realization of the strong coupling regime of the radiation matter interaction in the context of emitter at a meta surface. The strong interaction is well realized in cavity quantum electrodynamics which also shows that the strong coupling is much easier to realize using a collection of emitters. Keeping this in mind we study if emitters on a hyperbolic meta materials can yield strong coupling regime. We show that the strong coupling can be realized for densities of emitters exceeding a critical value. A way to detect the strong coupling between emitters and a hyperbolic metamaterials is to use the Kretschman-Raether configuration. The strong coupling appears as the splitting of the re ectivity dip. In the weak coupling regime the dip position shifts. The shift and splitting can be used to sense active molecules at surfaces.