Journal
JOURNAL OF APPLIED PHYSICS
Volume 109, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3573768
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Funding
- Australian Research Council (ARC) [DP0880466]
- Australian Department of Innovation, Industry, Science and Research [CG090191]
- European Union [EQUIND IST-034368]
- Defense Advanced Research Projects Agency [HR0011-09-1-0006]
- Regents of the University of California
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The negatively-charged nitrogen-vacancy (NV) center is the most studied optical center in diamond and is very important for applications in quantum information science. Many proposals for integrating NV centers in quantum and sensing applications rely on their tailored fabrication in ultra pure host material. In this study, we use ion implantation to controllably introduce nitrogen into high purity, low nitrogen chemical vapor deposition diamond samples. The properties of the resulting NV centers are studied as a function of implantation temperature, annealing temperature, and implantation fluence. We compare the implanted NV centers with native NV centers present deep in the bulk of the as-grown samples. The results for implanted NV centers are promising but indicate, at this stage, that the deep native NV centers possess overall superior optical properties. In particular, the implanted NV centers obtained after annealing at 2000 degrees C under a stabilizing pressure of 8 GPa showed an ensemble linewidth of 0.17 nm compared to 0.61 nm after annealing at 1000 degrees C. Over the same temperature range, the ensemble NV-/NV0 ratio increased by a factor of similar to 5, although this was accompanied by an overall decrease in the NV count. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573768]
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