Perfect state transfer on several types of graphs based on the quantum probability perspective Qi Han, Rong Zhang, Shijiao Xing, Jingyi Zhang and Ziyi Ma Eur. Phys. J. Plus, 140 6 (2025) 541 Published online: 17 June 2025 DOI: 10.1140/epjp/s13360-025-06483-x