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Título: | Coupling of molecular emitters and plasmonic cavities beyond the point-dipole approximation |
Autor: | Neuman, Tomáš CSIC ORCID; Esteban, Ruben CSIC ORCID; Casanova, David; García-Vidal, F. J.; Aizpurua, Javier CSIC ORCID | Palabras clave: | Single-molecule spectroscopy Point-dipole approximation Nanoplasmonics Quantum nano-optics Plasmon−exciton coupling Quantum chemistry |
Fecha de publicación: | 2018 | Editor: | American Chemical Society | Citación: | Nano Letters 18(4): 2358-2364 (2018) | Resumen: | As the size of a molecular emitter becomes comparable to the dimensions of a nearby optical resonator, the standard approach that considers the emitter to be a point-like dipole breaks down. By adoption of a quantum description of the electronic transitions of organic molecular emitters, coupled to a plasmonic electromagnetic field, we are able to accurately calculate the position-dependent coupling strength between a plasmon and an emitter. The spatial distribution of excitonic and photonic quantum states is found to be a key aspect in determining the dynamics of molecular emission in ultrasmall cavities both in the weak and strong coupling regimes. Moreover, we show that the extreme localization of plasmonic fields leads to the selection rule breaking of molecular excitations. | URI: | http://hdl.handle.net/10261/177791 | DOI: | 10.1021/acs.nanolett.7b05297 | Identificadores: | doi: 10.1021/acs.nanolett.7b05297 e-issn: 1530-6992 issn: 1530-6984 |
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