2008/08/31 by V. Jacques, P. Neumann, Philipp Neumann +16 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #Force Microscopy Techniques and Applications #Semiconductor materials and devices #quant-ph
paper · pdf · doi:10.1103/physrevlett.102.057403
published as Phys. Rev. Lett. 102, 057403 (2009) · 4 pages, 4 figures
openalex publication_date 2009/02/06 · arxiv created 2009/02/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
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 15N nuclear spin associated with the NV center, corresponding to microK 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.