Hannover 2013 – wissenschaftliches Programm
Q 9.2: Vortrag
Montag, 18. März 2013, 14:15–14:30, A 310
Coupling of single colour centres to photonic crystal cavities in monocrystalline diamond — •Janine Riedrich-Möller1, Laura Kipfstuhl1, Sébastien Pezzagna2, Jan Meijer2, Martin Fischer3, Stefan Gsell3, Matthias Schreck3, and Christoph Becher1 — 1Experimentalphysik 7.2, Universität des Saarlandes, Germany — 2Rubion, Ruhr-Universität Bochum, Germany — 3Experimentalphysik IV, Universität Augsburg, Germany
The deterministic coupling of single quantum emitters to photonic crystal cavities is considered as an important step towards integrated solid-state devices for quantum information processing. As single emitters, colour centres in diamond, e.g. nitrogen- (NV) or silicon-vacancy (SiV) centres have attracted significant interest due to their extraordinary properties like long spin coherence times or narrow bandwidth emission, respectively. For controlled coupling of a single defect centre to photonic crystal cavities several challenges have to overcome, e.g. exact emitter positioning and alignment of the dipole moment with respect to the cavity electric field as well as cavity tuning methods. Here we present two strategies towards deterministic coupling of single colour centres to photonic crystal cavities fabricated in monocrystalline diamond. In the first approach, we locate a single SiV centre in a diamond thin film and etch a photonic structure around the emitter via focused ion beam milling. After the fabrication, the cavity modes are tuned into resonance with the zero phonon line of a single SiV centre. In the second approach, the photonic crystal cavity is fabricated first and NV centres are subsequently implanted at the cavity centre.