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An emitter in the vicinity of a metal nanostructure is quenched by its decaythrough non-radiative channels, leading to the belief in a zone of inactivityfor emitters placed within $<$10nm of a plasmonic nanostructure. Here wedemonstrate that in tightly-coupled plasmonic resonators forming nanocavities"quenching is quenched" due to plasmon mixing. Unlike isolated nanoparticles,plasmonic nanocavities show mode hybridization which massively enhances emitterexcitation and decay via radiative channels. This creates ideal conditions forrealizing single-molecule strong-coupling with plasmons, evident in dynamicRabi-oscillations and experimentally confirmed by laterally dependent emitterplacement through DNA-origami.

Suppressed Quenching and Strong Coupling of Purcell-Enhanced Single-Molecule Emission in Plasmonic Nanocavities