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arXiv · 1708.08263

All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures

Jonas Nils Becker·Benjamin Pingault·David Groß·Mustafa Gündoğan·Nadezhda Kukharchyk·Matthew Markham·Andrew Edmonds·Mete Atatüre·Pavel Bushev·Christoph Becher
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Abstract

The silicon-vacancy center in diamond offers attractive opportunities in quantum photonics due to its favorable optical properties and optically addressable electronic spin. Here, we combine both to achieve all-optical coherent control of its spin states. We utilize this method to explore spin dephasing effects in an impurity-rich sample beyond the limit of phonon-induced decoherence: Employing Ramsey and Hahn-echo techniques at 12mK base temperature we identify resonant coupling to a substitutional nitrogen spin bath as the limiting decoherence source for the electron spin.

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Jonas Nils Becker, Benjamin Pingault, David Groß, Mustafa Gündoğan, Nadezhda Kukharchyk, Matthew Markham, Andrew Edmonds, Mete Atatüre, Pavel Bushev, Christoph Becher. 2017-08-28. All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures. https://doi.org/10.1103/physrevlett.120.053603

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