The negatively charged nitrogen-vacancy (NV) centre is a unique defect in diamond that possesses properties highly suited to many applications, including quantum information processing, quantum metrology, and biolabelling. In this talk, I will first make use of group theory to analyze electronic structure of the NV centre[1,2]. Then I will introduce some important experimental techniques about NV, including Optically Detected Magnetic Resonance  (ODMR) and some important pulse sequences which are commonly used in magnetic resonance experiments[3]. At last, I will talk about the tracking of single nuclear spin precession using NV and Carr–Purcell- type dynamical decoupling sequence[4].

[1] J.R. Maze et al 2011 New J. Phys

[2] M.W. Doherty et al 2011 New J. Phys

[3] Schirhagl et al.Annu. Rev. Phys. Chem. 2014

[4] CujiaK. et al. Nature 571, 230–233 (2019).