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arXiv · 1609.00555

Quantum emitter dipole-dipole interactions in nanoplasmonic systems

Marek Nečada·Jani-Petri Martikainen·Päivi Törmä
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Abstract

We introduce a generalized Dicke-like model to describe two-level systems coupled with a single bosonic mode. In addition, the two-level systems mutually interact via direct dipole-dipole interaction. We apply the model to an ensemble of dye molecules coupled to a plasmonic excitation in a metallic nanoparticle and study how the dipole-dipole interaction and configurational randomness introduced to the system affect the energy spectra. Comparing the system eigenenergies obtained by our model with the light spectra from a multiple-scattering simulation, we suggest a way to identify dark modes in our model. Finally, we perform a parameter sweep in order to determine the scaling properties of the system and to classify the regions of the parameter space where the dipole-dipole interactions can have significant effects.

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Marek Nečada, Jani-Petri Martikainen, Päivi Törmä. 2016-09-02. Quantum emitter dipole-dipole interactions in nanoplasmonic systems. https://doi.org/10.1142/s0217979217400069

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