Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 31: Poster: Quantum Optics and Photonics I
Q 31.67: Poster
Dienstag, 7. März 2017, 17:00–19:00, P OG1+2
A cavity-enhanced single photon source using the silicon vacancy center in diamond — •Julia Benedikter1,2, Hanno Kaupp1,2, Christoph Becher3, Theodor W. Hänsch1,2, and David Hunger1,2,4 — 1Ludwig-Maximilians-Universität München, Germany — 2Max-Planck-Institut für Quantenoptik, Garching, Germany — 3Universität des Saarlandes, Saarbrücken, Gemany — 4Karlsruher Institut für Technologie, Karlsruhe, Germany
Single photon sources are an integral part of various quantum information applications, and quantum emitters in the solid state at room temperature appear as a particularly promising implementation. We couple the fluorescence of individual silicon vacancy centers in nanodiamonds to a tunable optical microcavity to demonstrate a single photon source with increased efficiency, higher brightness, and improved spectral purity compared to the intrinsic emitter properties. We use a fiber-based microcavity with a mode volume as small as 3.4λ3 and a quality factor of 1.9× 104 and observe an effective Purcell factor up to 9, and lifetime changes by up to 31%, limited by the finite quantum efficiency of the particular emitters studied here. With the availability of improved materials, our achieved parameters predict up to 1GHz single photon rates, and device efficiencies above 90%.