Observation of wave amplification and temporal topological state in a non-synthetic photonic time crystal

J Jiang Xiong (State Key Laboratory of Natural Product Chemistry, College of Chemistry and Chemical Engineering, School of Pharmacy) X Xudong Zhang L Longji Duan J Jiarui Wang (School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore) Y Yang Long H Haonan Hou L Letian Yu L Linyang Zou B Baile Zhang (Division of Physics and Applied Physics)