Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.057403
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Funding
- European Union
- Deutsche Forschungsgemeinschaft [SFB/TR21]
- Humboldt Foundation
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We report a versatile method to polarize single nuclear spins in diamond, based on optical pumping of a single nitrogen-vacancy (NV) defect and mediated by a level anticrossing in its excited state. A nuclear-spin polarization higher than 98% is achieved at room temperature for the N-15 nuclear spin associated with the NV center, corresponding to mu K effective nuclear-spin temperature. We then show simultaneous initialization of two nuclear spins in the vicinity of a NV defect. Such robust control of nuclear-spin states is a key ingredient for further scaling up of nuclear-spin based quantum registers in diamond.
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