摘要
The pseudo-magnetic field,an artificial synthetic gauge field,has attracted intense research interest in the classical wave system.The strong pseudo-magnetic field is realized in a two-dimensional photonic crystal(PhC)by introducing the uniaxial linear gradient deformation.The emergence of the pseudomagnetic field leads to the quantization of Landau levels.The quantum-Hall-like edge states between adjacent Landau levels are observed in our designed experimental implementation.The combination of two reversed gradient PhCs gives rise to the spatially nonuniform pseudo-magnetic field.The propagation of the large-area edge state and the interesting phenomenon of the snake state induced by the nonuniform pseudo-magnetic field is experimentally demonstrated in a PhC heterostructure.This provides a good platform to manipulate the transport of electromagnetic waves and to design useful devices for information processing.
基金
supported by the Graduate Innovation Program of China University of Mining and Technology (Grant No.2023WLJCRCZL273)
the Fundamental Research Funds for the Central Universities (Grant No.2023ZDYQ11003)
the China Postdoctoral Science Foundation (Grant No.2023M743784)
the State Key Laboratory of Millimeter Waves (Grant No.K202407)
the Basic Research Program of Xuzhou (Grant No.KC22016)
the Key Academic Discipline Project of China University of Mining and Technology (Grant No.2022WLXK06)
the National Natural Science Foundation of China (Grant No.12274315).
