Microwave saturation spectroscopy of nitrogen-vacancy ensembles in diamond

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 13C nuclei and demonstrate that it can be used for magnetic-field-insensitive thermometry.
Autorzy / Authors: 
P. Kehayias, M. Mrózek, V. M. Acosta, A. Jarmola, D. S. Rudnicki, R. Folman, W. Gawlik, and D. Budker
Phys. Rev. B 89, 245202
Tematyka badań: 
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