# Manipulation of Quenching in Nanoantenna-Emitter Systems Enabled by External Detuned Cavities: A Path to Enhance Strong-Coupling

## TL;DR

This paper demonstrates how external detuned cavities can manipulate quenching in nanoantenna-emitter systems, enabling enhanced strong coupling and improved emitter efficiency through interference effects.

## Contribution

It introduces a novel method using broadband Fabry-Perot microcavities to control quenching and achieve strong coupling in nanoantenna-emitter systems.

## Key findings

- Cavity-assisted suppression of nonradiative quenching channels
- Enhanced coupling and bandwidth narrowing of hybrid resonances
- Potential for improved solid-state emitter efficiency

## Abstract

We show that a broadband Fabry-Perot microcavity can assist an emitter coupled to an off-resonant plasmonic nanoantenna to inhibit the nonradiative channels that affect the quenching of fluorescence. We identify the interference mechanism that creates the necessary enhanced couplings and bandwidth narrowing of the hybrid resonance and show that it can assist entering into the strong coupling regime. Our results provide new possibilities for improving the efficiency of solid-state emitters and accessing diverse realms of photophysics with hybrid structures that can be fabricated using existing technologies.