Berlin 2014 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 65: Quantum information: Quantum computers and communication II
Q 65.4: Vortrag
Freitag, 21. März 2014, 14:45–15:00, DO26 207
Polarisation results giving insight into the electronic and physical sturcture of the silicon-vacancy center in diamond. — •Kay D. Jahnke1, Lachlan J. Rogers1, Marcus W. Doherty2, Andreas Dietrich1, Liam McGuinness1, Christoph Müller1, Tokuyuki Teraji3, Junichi Isoya4, Neil B. Manson2, and Fedor Jelezko1 — 1Institut für Quantenoptik und IQST, Universität Ulm, D-89081 Ulm, Germany — 2Laser Physics Centre, Research School of Physics and Engineering, Australian National University, ACT 0200, Australia — 3National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan — 4Research Center for Knowledge Communities, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki 305-8550, Japan
In recent times the negatively-charged silicon-vacancy (SiV−) center in diamond has shown promise as a single photon source for quantum communications and information processing. However, the center’s implementation in such quantum technologies is hindered by contention surrounding its fundamental properties. Here we present optical polarization measurements of single centers in bulk diamond that resolve this state of contention and establish that the center has a ⟨111⟩ orientated split-vacancy structure with D3d symmetry. Furthermore, we identify an additional electronic level and the presence of dynamic Jahn-Teller effects in the center’s 738 nm optical resonance.