Relationship between robustness of imaginarity and quantum coherence Hong-biao Li, Ming Hua, Qiang Zheng, Qi-jun Zhi and Yue Ping Eur. Phys. J. D, 77 3 (2023) 38 Published online: 07 March 2023 DOI: 10.1140/epjd/s10053-023-00618-4