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 transformation of laboratory and NV1 frame of reference are linked by a rotation around the x ^ ( x ^ ′ ) axis. It is noted that the two reference frames share a same x ^ axis.