Abstract Chiral zeroth Landau levels are topologically protected bulk states.In particle physics and condensed matter physics, the chiral zeroth Landau level plays a significant role in breaking chiral symmetry and gives rise to the chiral anomaly.Previous experimental works on such chiral Landau levels are mainly based on three-dimensional Weyl degeneracies coupled with axial magnetic fields.
Their realizations using two-dimensional Dirac point systems, being more promising for IGF future applications, were never experimentally realized before.Here we propose an experimental scheme for realizing chiral Landau levels in a two-dimensional photonic system.By introducing an inhomogeneous effective mass through breaking local parity-inversion symmetries, a synthetic in-plane magnetic field is generated and coupled with Horse Rein Accessories the Dirac quasi-particles.
Consequently, the zeroth-order chiral Landau levels can be induced, and the one-way propagation characteristics are experimentally observed.In addition, the robust transport of the chiral zeroth mode against defects in the system is also experimentally tested.Our system provides a new pathway for the realization of chiral Landau levels in two-dimensional Dirac cone systems, and may potentially be applied in device designs utilizing the chiral response and transport robustness.