Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics III
Q 42.53: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
SiV Centres in Microcavities - an Efficient Single Photon Source at Room Temperature — •Julia Benedikter1,2, Elke Neu3, Roland Albrecht3, Christoph Becher3, Theodor W Hänsch1,2, and David Hunger1,2 — 1Ludwig-Maximilians-Universität München, Germany — 2Max-Planck-Institut für Quantenoptik, Garching, Germany — 3Universität des Saarlandes, Saarbrücken, Germany
Single photon sources are an integral part of various quantum information applications. Solid state emitters offer on-demand single photon emission without the need for very involved set-ups. The emission properties, especially the very narrow single phonon line, and stability of the silicon vacancy centre in diamond make it a promising candidate for a single photon source at room temperature. We use fibre-based microcavities [1, 2] to Purcell-enhance and efficiently collect the emission of single SiV centres in nanodiamonds. We operate in the bad emitter regime, where a cavity with a mode volume of a few cubic wavelengths can achieve high effective Purcell factors up to about 20. We report on measurements on narrow-line bright single SiV centres in free space and in an ultra-small mode volume cavity and compare rates and time constants. Furthermore, we will discuss an empirical model for shelving and deshelving processes.
[1] Hunger et al., NJP 12, 065038 (2010)
[2] Hunger et al., AIP Advances 2, 012119 (2012)