All-Optical Control of the Silicon-Vacancy Spin in Diamond at Millikelvin Temperatures.
Becker, Jonas N
Physical Review Letters
American Physical Society
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Becker, J. N., Pingault, B., Groß, D., Gündoğan, M., Kukharchyk, N., Markham, M., Edmonds, A., et al. (2018). All-Optical Control of the Silicon-Vacancy Spin in Diamond at Millikelvin Temperatures.. Physical Review Letters, 120 (5. 053603)https://doi.org/10.1103/PhysRevLett.120.053603
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 temperatures down to 40 mK we identify resonant coupling to a substitutional nitrogen spin bath as limiting decoherence source for the electron spin.
This research has been partially funded by the European Community’s Seventh Framework Programme (FP7/2007-2013) under Grant agreement No. 611143 (DIADEMS). M. A. gratefully acknowledges financial support by the European Research Council ERC Consolidator Grant Agreement No. 617985 and the EPSRC National Quantum Technologies Programme NQIT EP/M013243/1. B. P. thanks Wolfson College (University of Cambridge) for financial support. P. B. gratefully acknowledges financial support by the Deutsche Forschungsgemeinschaft (Grants No. BU2510/2-1, No. INST256/415-1).
European Research Council (617985)
EC FP7 MC ITN (289795)
UNIVERSITY OF OXFORD (FB EPSRC) (EP/M013243/1)
External DOI: https://doi.org/10.1103/PhysRevLett.120.053603
This record's URL: https://www.repository.cam.ac.uk/handle/1810/277211