Suppressed quenching and strong-coupling of Purcell-enhanced single-molecule emission in plasmonic nanocavities

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Title: Suppressed quenching and strong-coupling of Purcell-enhanced single-molecule emission in plasmonic nanocavities
Authors: Kongsuwan, N
Demetriadou, A
Chikkaraddy, R
Benz, F
Turek, VA
Keyser, UF
Baumberg, JJ
Hess, O
Item Type: Journal Article
Abstract: An emitter in the vicinity of a metal nanostructure is quenched by its decay through nonradiative channels, leading to the belief in a zone of inactivity for emitters placed within <10 nm of a plasmonic nanostructure. Here we demonstrate and explain why in tightly coupled plasmonic resonators forming nanocavities “quenching is quenched” due to plasmon mixing. Unlike isolated nanoparticles, such plasmonic nanocavities show mode hybridization, which can massively enhance emitter excitation and decay via radiative channels, here experimentally confirmed by laterally dependent emitter placement through DNA-origami. We explain why this enhancement of excitation and radiative decay can be strong enough to facilitate single-molecule strong coupling, as evident in dynamic Rabi-oscillations.
Issue Date: 18-Oct-2017
Date of Acceptance: 18-Oct-2017
URI: http://hdl.handle.net/10044/1/55980
DOI: https://dx.doi.org/10.1021/acsphotonics.7b00668
ISSN: 2330-4022
Publisher: American Chemical Society
Start Page: 186
End Page: 191
Journal / Book Title: ACS Photonics
Volume: 5
Issue: 1
Copyright Statement: © 2017 American Chemical Society
Keywords: physics.optics
Publication Status: Published
Appears in Collections:Condensed Matter Theory
Physics
Faculty of Natural Sciences



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