Reconstruction of vector static magnetic field by different axial NV centers using continuous wave optically detected magnetic resonance in diamond

Ye Jian-Feng, Jiao Zheng, Ma Kun, Huang Zhi-Yong, Lv Hai-Jiang^†, Jiang Feng-Jian^‡

The energy level scheme of NV electron spin ground states. The zero-field splitting value is D=2.87 GHz. For B ≠ 0 the split-energy levels of m s = ± 1 correspond to doublet resonance frequencies ν 1 and ν 2 , respectively.