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Experimental observation of Dirac exceptional point Yang Wu,1,3 Dongfanghao Zhu,1,3 Yunhan Wang,1,2,3 Xing Rong,1,2,3,∗ and Jiangfeng Du1,2,3,4,† 1CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China 2Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China 3Anhui Province Key Laboratory of Scientific Instrument Development and Application, University of Science and Technology of China, Hefei 230026, China 4Institute of Quantum Sensing and School of Physics, Zhejiang University, Hangzhou 310027, China
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