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The relaxation of a quantum emitter (QE) near metal-dielectric layered nanostructures is investigated, with focus on the influence of plasmonic quantum effects. The Greens tensor approach, combined with the Feibelman $d$-parameter formalism, is used to calculate the Purcell factor and the dynamics of a two-level QE in the presence of the nanostructure. Focusing on the case of Na, we identify electron spill-out as the dominant source of quantum effects in jellium-like metals. Our results reveal a clear splitting in the emission spectrum of the emitter, and non-Markovian relaxation dynamics, implying strong light--matter coupling between them, a coupling that is not prevented by the quantum-informed optical response of the metal.
Realization of integrated photonic circuits on a single chip requires controlled manipulation and integration of solid-state quantum emitters with nanophotonic components. Previous works focused on emitters embedded in a three-dimensional crystals --
We demonstrate that a ionising transition can be strongly coupled to a photonic resonance. The strong coupling manifests itself with the appearance of a narrow optically active resonance below the ionisation threshold. Such a resonance is due to elec
Solid-state microcavities combining ultra-small mode volume, wide-range resonance frequency tuning, as well as lossless coupling to a single mode fibre are integral tools for nanophotonics and quantum networks. We developed an integrated system provi
We study the effect of electron spill-out and of nonlocality on the propagation of light inside a gap between two semi-infinite metallic regions. We first present a simplified physical model for the spill-out phenomenon, an approach sufficient to sho
Two-photon absorption is an important non-linear process employed for high resolution bio-imaging and non-linear optics. In this work we realize two-photon excitation of a quantum emitter embedded in a two-dimensional material. We examine defects in