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Published March 21, 2022 | Version v1
Journal article Open

TR12 centers in diamond as a room temperature atomic scale vector magnetometer

  • 1. 3rd Institute of Physics, University of Stuttgart,70569 Stuttgart, Germany
  • 2. Lumiphase AG, Brinerstrasse 21, 8003 Zurich, Switzerland
  • 3. University of Augsburg, Institute of Physics, D-86135 Augsburg, Germany
  • 4. Leibniz Institute for Surface Engineering (IOM), Department Functional Surfaces, D-04318 Leipzig, Germany
  • 5. Quantronics Group, SPEC, CEA, CNRS, Universite Paris-Saclay, 91191 Gif-sur-Yvette CEDEX, France

Description

The family of room temperature atomic scale magnetometers is currently limited to nitrogen
vacancy (NV) centers in diamond. However, NV centers are insensitive to strong off-axis magnetic
fields. In this work, we show that the well-known TR12 radiative defect in diamond, exhibits
strong optically detected magnetic resonance (ODMR) signal under optical saturation. We also
demonstrate that the spin system responsible for the magnetic resonance is an excited triplet state
that can be coherently controlled at room temperature on a single defect level. The high ODMR
contrast, which is maintained even for strong off-axis magnetic fields, suggests that TR12 centers
can be used for vector magnetometry even at high field.

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