Characterization of hyperfine interaction between an NV electron spin and a first-shell 13C nuclear spin in diamond

TL;DR

This paper provides detailed experimental characterization of the hyperfine interaction between an NV center's electron spin and a first-shell 13C nuclear spin in diamond, crucial for quantum technology applications.

Contribution

It offers comprehensive data and analysis of the hyperfine tensor parameters and their orientation, advancing understanding of NV center spin interactions.

Findings

Precise hyperfine tensor parameters obtained.

Orientation of hyperfine interaction determined.

Enhanced understanding of NV-13C spin coupling.

Abstract

The Nitrogen-Vacancy (NV) center in diamond has attractive properties for a number of quantum technologies that rely on the spin angular momentum of the electron and the nuclei adjacent to the center. The nucleus with the strongest interaction is the $^{13}$C nuclear spin of the first shell. Using this degree of freedom effectively hinges on precise data on the hyperfine interaction between the electronic and the nuclear spin. Here, we present detailed experimental data on this interaction, together with an analysis that yields all parameters of the hyperfine tensor, as well as its orientation with respect to the atomic structure of the center.