PT symmetry and PT-enhanced quantum sensing in a spin-boson system

Pei-Rong Han1,∗ Fan Wu1,∗ Xin-Jie Huang1,∗ Huaizhi Wu, Zhen-Biao Yang1,† Chang-Ling Zou, Wei Yi, Mengzhen Zhang, Hekang Li, Kai Xu, Dongning Zheng, Heng Fan, Jianming Wen7,‡ and Shi-Biao Zheng1§ 1. Fujian Key Laboratory of Quantum Information and Quantum Optics, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian, 350108, China 2. CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China 3. CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China 4. Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA 5. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 6. CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China and 7. Department of Physics, Kennesaw State University, Marietta, Georgia 30060, USA (Dated: October 11, 2022)