Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Nano-Optics (Single Quantum Emitters)
Q 43.4: Vortrag
Mittwoch, 7. März 2018, 15:00–15:15, K 0.023
Efficient solid-state single-photon sources based on diamond colour centers coupled to plasmonic bullseye resonators — •Martin Zeitlmair1, Florian Fertig1, Philipp Altpeter1, and Harald Weinfurter1,2 — 1Ludwig-Maximilians-Universität, München — 2Max-Planck-Institut für Quantenoptik, Garching
Efficient single-photon sources are a key building block for many applications in quantum information science and ultra-sensitive phase, absorption, and fluorescence spectroscopy. Here, solid-state based sources employing defect centers in nanodiamonds are advantageous due to their emission of single photons even at room temperature. The isotropic emission behaviour, however, requires the efficient redirection of the emission by means of photonic or plasmonic nanostructures.
We couple single nitrogen-vacancy centers hosted in nanodiamonds to aluminium bullseye structures employing an AFM-based pick-and-place technique. The plasmonic resonator is realized by an electron-beam lithography based fabrication method on dielectric mirror substrates. By optimizing the design parameters of the nanoplasmonic device, strong redirection and self-focusing of light emitted by the defect center can be achieved over a broad spectral range.