Low-Temperature Photophysics of Single Nitrogen-Vacancy Centers in Diamond.

  title={Low-Temperature Photophysics of Single Nitrogen-Vacancy Centers in Diamond.},
  author={Jodok Happacher and David A. Broadway and Juanita Bocquel and Patrick Reiser and Alejandro Jimen{\'e}z and M. A. Tschudin and Lucas Thiel and Dominik Rohner and Marcel.li Grimau Puigibert and Brendan J. Shields and Jeronimo R. Maze and Vincent Jacques and Patrick Maletinsky},
  journal={Physical review letters},
  volume={128 17},
We investigate the magnetic field dependent photophysics of individual nitrogen-vacancy (NV) color centers in diamond under cryogenic conditions. At distinct magnetic fields, we observe significant reductions in the NV photoluminescence rate, which indicate a marked decrease in the optical readout efficiency of the NV's ground state spin. We assign these dips to excited state level anticrossings, which occur at magnetic fields that strongly depend on the effective, local strain environment of… 
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