Optical signatures of silicon-vacancy spins in diamond

Tina Müller, Christian Hepp, Benjamin Pingault, Elke Neu, Stefan Gsell, Matthias Schreck, Hadwig Sternschulte, Doris Steinmüller-Nethl, Christoph Becher and Mete Atatüre ()
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Tina Müller: Cavendish Laboratory, University of Cambridge
Christian Hepp: Fachrichtung 7.2 (Experimentalphysik), Universität des Saarlandes
Benjamin Pingault: Cavendish Laboratory, University of Cambridge
Elke Neu: Fachrichtung 7.2 (Experimentalphysik), Universität des Saarlandes
Stefan Gsell: Experimentalphysik IV, Institut für Physik, Universität Augsburg, Universitätsstrasse 1 Nord
Matthias Schreck: Experimentalphysik IV, Institut für Physik, Universität Augsburg, Universitätsstrasse 1 Nord
Hadwig Sternschulte: DiaCoating GmbH, Mitterweg 24
Doris Steinmüller-Nethl: DiaCoating GmbH, Mitterweg 24
Christoph Becher: Fachrichtung 7.2 (Experimentalphysik), Universität des Saarlandes
Mete Atatüre: Cavendish Laboratory, University of Cambridge

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Colour centres in diamond have emerged as versatile tools for solid-state quantum technologies ranging from quantum information to metrology, where the nitrogen-vacancy centre is the most studied to date. Recently, this toolbox has expanded to include novel colour centres to realize more efficient spin-photon quantum interfaces. Of these, the silicon-vacancy centre stands out with highly desirable photonic properties. The challenge for utilizing this centre is to realize the hitherto elusive optical access to its electronic spin. Here we report spin-tagged resonance fluorescence from the negatively charged silicon-vacancy centre. Our measurements reveal a spin-state purity approaching unity in the excited state, highlighting the potential of the centre as an efficient spin-photon quantum interface.

Date: 2014
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DOI: 10.1038/ncomms4328

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