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Approaching the strong coupling limit in single plasmonic nanorods interacting with J-aggregates.

Abstract：

: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.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Zengin G,Johansson G,Johansson P,Antosiewicz TJ,Käll M,Shegai T

doi

10.1038/srep03074

subject

Has Abstract

pub_date

2013-10-29 00:00:00

pages

3074

issn

2045-2322

pii

srep03074

journal_volume

3

pub_type

杂志文章

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