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Strong coupling regime and hybrid quasinormal modes of a single plasmonic resonator coupled to a TMDC monolayer

Authors :
Carlson, Chelsea
Salzwedel, Robert
Selig, Malte
Knorr, Andreas
Hughes, Stephen
Source :
Phys. Rev. B 104, 125424 (2021)
Publication Year :
2021

Abstract

We present a rigorous photonic mode model to describe the strong coupling between a monolayer of $\rm MoSe_2$ and a single gold nanoparticle. The onset of strong coupling is quantified by computing the three-dimensional hybrid quasinormal modes of the combined structure, allowing one to accurately model light-matter interactions without invoking the usual phenomenological theories of strong coupling. We explore the hybrid quasinormal modes as a function of gap size and temperature and find spectral splittings in the range of around 80-110 meV, with no fitting parameters for the material models. We also show how the hybrid modes exhibit Fano-like resonances and quantify the complex poles of the hybrid modes as well as the Purcell factor resonances from embedded dipole emitters. These effects cannot be described with the usual heuristic normal mode theories.<br />Comment: 13 pages, 8 figures

Subjects

Subjects :
Physics - Optics

Details

Database :
arXiv
Journal :
Phys. Rev. B 104, 125424 (2021)
Publication Type :
Report
Accession number :
edsarx.2106.01892
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevB.104.125424