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Approaching the strong coupling limit in single plasmonic nanorods interacting with J-aggregates
Chalmers University of Technology, Göteborg, Sweden.
Chalmers University of Technology, Göteborg, Sweden.
Örebro University, School of Science and Technology. Chalmers University of Technology, Göteborg, Sweden.ORCID iD: 0000-0002-2110-3071
Chalmers University of Technology, Göteborg, Sweden; University of Warsaw, Warsaw, Poland.
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2013 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 3, p. 3074-Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2013. Vol. 3, p. 3074-
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:oru:diva-32533DOI: 10.1038/srep03074ISI: 000326331200002OAI: oai:DiVA.org:oru-32533DiVA, id: diva2:667408
Funder
Swedish Research CouncilKnut and Alice Wallenberg FoundationSwedish Foundation for Strategic Research
Note

Funding Agency: Chalmers Area of Advance Nanoscience and Nanotechnology; Goran Gustafsson Foundation (se även Forskningsfinansiär)

Available from: 2013-11-26 Created: 2013-11-26 Last updated: 2017-12-06Bibliographically approved

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Johansson, Peter

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