Spectroscopy and quantum optics with color centers in diamond

We produce single color centers in diamond using two different methods:

  • in-situ incorporation of dopant atoms during diamond growth (CVD method)
  • ion implantation in high purity diamond

We have produced and investigated color centers by in-situ incorporation of Ta, W, and in particular Si. Using ion implantation we have generated color centers based on Si, Ni, Ni/Si, Xe and Cr. For SiV and Ni/Si centers we have demonstrated single photon emission with high brightness.

Our major goals are isolation of single color centers, spectroscopic investigation for exploring their structure and identification of color centers with spectral properties which are suitable for quantum optics experiments. An application within the field of quantum information is to realize non-classical light sources with deterministic emission of single photons.