Near-field hyperspectral quantum probing of multimodal plasmonic resonators

Abstract : Quantum systems, excited by an external source of photons, display a photodynamics that is ruled by a subtle balance between radiative or nonradiative energy channels when interacting with metallic nanostructures. We apply and generalize this concept to achieve a quantum probing of multimodal plasmonic resonators by collecting and filtering the broad emission spectra generated by a nanodiamond (ND) hosting a small set of nitrogen-vacancy (NV) color centers attached at the apex of an optical tip. Spatially and spectrally resolved information on the photonic local density of states (ph-LDOS) can be recorded with this technique in the immediate vicinity of plasmonic resonators, paving the way for a complete near-field optical characterization of any kind of nanoresonators in the single photon regime.
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Aurélien Cuche, M. Berthel, Upkar Kumar, G. Colas Des Francs, S. Huant, et al.. Near-field hyperspectral quantum probing of multimodal plasmonic resonators. Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 95 (12), pp.121402. ⟨10.1103/PhysRevB.95.121402⟩. ⟨hal-01627764⟩

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