Three-dimensional localization spectroscopy of individual nuclear spins with a diamond quantum sensor
Jonathan Zopes, Kristian S. Cujia, Christian L. Degen
Department of Physics, ETH Zurich, Otto Stern Weg 1, 8093 Zurich, Switzerland
Diamond has emerged as a unique platform for a variety of quantum sensing applications, because it can host defects that show quantum behavior up to room temperature. Our group uses the electron spin of one of these defects, the nitrogen-vacancy (NV) center, as a sensor that enables nuclear magnetic resonance (NMR) experiments on the nanoscale.
Here, we will report on three-dimensional localization spectroscopy experiments of individual 13C nuclear spins. By detecting their nuclear free precession in rapidly switchable external magnetic fields, we are able to reconstruct the spatial location of the nuclear spins with a precision on the sub-Angstrom scale in all three dimensions.
The presented method can be useful for the atomic-scale structure determination of single molecules attached to the diamond surface in the nanoscale vicinity of the quantum sensor spin.