Multiplicative inverse with quantum search algorithm under π/18 phase rotation You-Feng Yang, Long-Zhen Duan, Tao-Rong Qiu and Xu-Ming Xie Eur. Phys. J. Plus, 136 7 (2021) 734 Published online: 09 July 2021 DOI: 10.1140/epjp/s13360-021-01704-5