Strong coupling between an inverse bowtie Nano-Antenna and a J-aggregate

We demonstrate strong coupling between a single or few J-aggregates and an inverse bowtie plasmonic structure, when the J-aggregate is located at a specific axial distance from the metallic surface. Three hybrid modes are clearly observed, witnessing a strong interaction, with a Rabi splitting of up to 290 meV, the precise value of which significantly depends on the orientation of the J-aggregate with respect to the symmetry axis of the plasmonic structure. We repeated our experiments with a set of triangular hole arrays, showing consistent formation of three or more hybrid modes, in good agreement with numerical simulations. (C) 2021 Published by Elsevier Inc.

Automated summary

We demonstrate strong coupling between a single or few J-aggregates and an inverse bowtie plasmonic structure, resulting in the formation of three hybrid modes. The magnitude of the Rabi splitting, up to 290 meV, depends on the orientation of the J-aggregate with respect to the symmetry axis of the plasmonic structure.