title: Aluminum Nanoantenna Complexes for Strong Coupling between Excitons and Localized Surface Plasmons.
abstract: We study the optical dynamics in complexes of aluminum nanoantennas coated with molecular J-aggregates and find that they provide an excellent platform for the formation of hybrid exciton-localized surface plasmons. Giant Rabi splitting of 0.4 eV, which corresponds to ∼10 fs energy transfer cycle, is observed in spectral transmittance. We show that the nanoantennas can be used to manipulate the polarization of hybrid states and to confine their mode volumes. In addition, we observe enhancement of the photoluminescence due to enhanced absorption and increase in the local density of states at the exciton-localized surface plasmon energies. With recent emerging technological applications based on strongly coupled light-matter states, this study opens new possibilities to explore and utilize the unique properties of hybrid states over all of the visible region down to ultraviolet frequencies in nanoscale, technologically compatible, integrated platforms based on aluminum.
authors.affiliation: Department of Physical Electronics, Fleischman Faculty of Engineering, Tel Aviv University , Tel Aviv 69978, Israel.
authors.forename: Elad
authors.initials: E
authors.lastname: Eizner
authors.affiliation: Department of Physical Electronics, Fleischman Faculty of Engineering, Tel Aviv University , Tel Aviv 69978, Israel.
authors.forename: Ori
authors.initials: O
authors.lastname: Avayu
authors.affiliation: Department of Physical Electronics, Fleischman Faculty of Engineering, Tel Aviv University , Tel Aviv 69978, Israel.
authors.forename: Ran
authors.initials: R
authors.lastname: Ditcovski
authors.affiliation: Department of Physical Electronics, Fleischman Faculty of Engineering, Tel Aviv University , Tel Aviv 69978, Israel.
authors.forename: Tal
authors.initials: T
authors.lastname: Ellenbogen
keywords: Strong coupling; aluminum nanoantennas; localized surface plasmons; organic polaritons