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arXiv · 1403.2119

Microwave saturation spectroscopy of nitrogen-vacancy ensembles in diamond

P. Kehayias·M. Mrózek·V. M. Acosta·A. Jarmola·D. S. Rudnicki·R. Folman·W. Gawlik·D. Budker
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Abstract

Negatively-charged nitrogen-vacancy (NV$^-$) centers in diamond have generated much recent interest for their use in sensing. The sensitivity improves when the NV ground-state microwave transitions are narrow, but these transitions suffer from inhomogeneous broadening, especially in high-density NV ensembles. To better understand and remove the sources of broadening, we demonstrate room-temperature spectral "hole burning" of the NV ground-state transitions. We find that hole burning removes the broadening caused by magnetic fields from $^{13}$C nuclei and demonstrate that it can be used for magnetic-field-insensitive thermometry.

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P. Kehayias, M. Mrózek, V. M. Acosta, A. Jarmola, D. S. Rudnicki, R. Folman, W. Gawlik, D. Budker. 2014-03-10. Microwave saturation spectroscopy of nitrogen-vacancy ensembles in diamond. https://doi.org/10.1103/physrevb.89.245202

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