Information retrieval and eigenstates coalescence in a non-Hermitian quantum system with anti-PT symmetry

Liangyu Ding, Kaiye Shi, Yuxin Wang, Qiuxin Zhang, Chenhao Zhu, Ludan Zhang, Jiaqi Yi, Shuaining Zhang, 2, 3 Xiang Zhang, 2, 3, ∗ and Wei Zhang 2, 3, † Department of Physics, Renmin University of China, Beijing 100872, China Beijing Academy of Quantum Information Sciences, Beijing 100193, China Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872,China