Pure negatively charged state of the NV center inn-type diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-02-03 |
| Journal | Physical review. B./Physical review. B |
| Authors | Yuki Doi, Takahiro Fukui, Hiromitsu Kato, Toshiharu Makino, Satoshi Yamasaki |
| Institutions | Kyoto University Institute for Chemical Research, National Institute of Advanced Industrial Science and Technology |
| Citations | 95 |
Abstract
Section titled āAbstractāOptical illumination on negatively charged nitrogen-vacancy $(\mathrm{N}{\mathrm{V}}^{\ensuremath{-}})$ centers inevitably causes stochastic charge-state transitions between the $\mathrm{N}{\mathrm{V}}^{\ensuremath{-}}$ and the neutral charge state of the NV center. It limits the steady-state population of $\mathrm{N}{\mathrm{V}}^{\ensuremath{-}}$ to 5% at minimum (\ensuremath{\sim}610 nm) and 80% (\ensuremath{\sim}532 nm) at maximum in intrinsic diamond depending on the wavelength. Here, we show Fermi-level control by phosphorus doping generates 99.4 \ifmmode\pm\else\textpm\fi{} 0.1% $\mathrm{N}{\mathrm{V}}^{\ensuremath{-}}$ under 1-\ensuremath{\mu}W and 593-nm excitation which is close to maximum absorption of $\mathrm{N}{\mathrm{V}}^{\ensuremath{-}}$. The pure $\mathrm{N}{\mathrm{V}}^{\ensuremath{-}}$ shows a fivefold increase in luminescence and a fourfold enhancement of an optically detected magnetic resonance under 593-nm excitation compared with those in intrinsic diamond.