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

• DOI: 10.1021/acsphotonics.7b00668
• Publication Date: 2017-10-18T21:50:53Z
• Authors: Nuttawut Kongsuwan; Angela Demetriadou; Rohit Chikkaraddy; Felix Benz; Vladimir A. Turek; Ulrich F. Keyser; Jeremy J. Baumberg; Ortwin Hess
• Keywords: Purcell effect

An emitter in the vicinity of a metal nanostructure is quenched by its decay through nonradiative channels, leading to belief zone inactivity for emitters placed within <10 nm plasmonic nanostructure. Here we demonstrate and explain why tightly coupled resonators forming nanocavities "quenching quenched" due plasmon mixing. Unlike isolated nanoparticles, such show mode hybridization, which can massively enhance excitation via radiative here experimentally confirmed laterally dependent placement DNA-origami. We this enhancement be strong enough facilitate single-molecule coupling, as evident dynamic Rabi-oscillations.