Approaching the strong coupling limit in single plasmonic nanorods interacting with J-aggregates
Journal article, 2013

We studied scattering and extinction of individual silver nanorods coupled to the J-aggregate form of the cyanine dye TDBC as a function of plasmon - exciton detuning. The measured single particle spectra exhibited a strongly suppressed scattering and extinction rate at wavelengths corresponding to the J-aggregate absorption band, signaling strong interaction between the localized surface plasmon of the metal core and the exciton of the surrounding molecular shell. In the context of strong coupling theory, the observed "transparency dips" correspond to an average vacuum Rabi splitting of the order of 100 meV, which approaches the plasmon dephasing rate and, thereby, the strong coupling limit for the smallest investigated particles. These findings could pave the way towards ultra-strong light-matter interaction on the nanoscale and active plasmonic devices operating at room temperature.

SYSTEM

TRANSISTOR

EXCITONS

NANOPARTICLES

ENERGY-TRANSFER

COMPLEXES

QUANTUM-DOT

DYE

DYNAMICS

LIGHT

Author

Gülis Zengin

Chalmers, Applied Physics, Bionanophotonics

Göran Johansson

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Peter Johansson

Chalmers, Applied Physics, Bionanophotonics

Tomasz Antosiewicz

Chalmers, Applied Physics, Bionanophotonics

Mikael Käll

Chalmers, Applied Physics, Bionanophotonics

Timur Shegai

Chalmers, Applied Physics, Bionanophotonics

Scientific Reports

2045-2322 (ISSN)

Vol. 3 3074

Subject Categories

Physical Sciences

DOI

10.1038/srep03074

More information

Created

10/8/2017