Nature CommunicationsQuantum tomography of a third-order exceptional point in a dissipative trapped ionY.-Y. ChenK. LiL. ZhangY.-K. WuJ.-Y. MaH.-X. YangC. ZhangB.-X. QiZ.-C. ZhouP.-Y. HouY. XuL. M. Duan2025-08-12Full textDOI https://doi.org/10.1038/s41467-025-62573-5