Yunpeng Yang has long been engaged in research on nitrogen-vacancy (NV) centres in diamond. His work focuses on their optical and spin properties, including optical detection magnetic resonance (ODMR), quantum sensing, and single-particle tracking. He is experienced in fabricating and characterising NV centre systems, applying them to precision measurements of magnetic fields, temperatures, and rotational dynamics. Over years of dedicated study, he has developed a deep understanding of NV centre-based quantum technologies and their applications in both fundamental physics and life sciences.