Abstract
A topological phase transition and the related bulk-boundary correspondence in a class of one-dimensional non-Hermitian photonic lattice with chiral symmetry are studied. We find that the corresponding topological number should be defined by adding up winding numbers calculated under the chiral symmetry. The Wilson loop method is used to calculate this topological number. We reveal the topological phase transition in one-dimensional non-Hermitian systems with chiral symmetry and provide a convenient and general pathway to characterize the related topology.
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