Deep reinforcement learning for universal quantum state preparation via dynamic pulse control Run-Hong He, Rui Wang, Shen-Shuang Nie, Jing Wu, Jia-Hui Zhang and Zhao-Ming Wang EPJ Quantum Technol., 8 1 (2021) 29 Published online: 20 December 2021 DOI: 10.1140/epjqt/s40507-021-00119-6