Effect of transverse magnetic fields on an isotopically engineered diamond NV ensemble*

The nitrogen vacancy (NV) in diamond is a leading candidate for quantum sensing applications such as magnetometry. Here, we study the effect of a transverse external magnetic field on the spin coherence of an ensemble of nitrogen vacancy (NV) centers in diamond with applications to high-sensitivity magnetometry. A transverse magnetic field has been shown to suppress electronic spin decoherence [1]. By utilizing 15N ions for implantation, the nuclear hyperfine interaction between the 13C spin bath and the defects is minimized. We utilize optically detected magnetic resonance and pulsed methods to explore this effect in isotopically engineered diamond films.

[1] PRB 88, 161412R (2013) Shin, et al