A non-Hermitian Creutz ladder with gain-loss and nonreciprocity exhibits multiple bulk-boundary correspondences and anomalous skin modes, with a hybrid spectral winding encoding localization of counterintuitive bulk modes.
At /u1D438/u1D45C= 0, |R (′) ± ⟩ = C |R (′) ± ⟩ indicates that the zero mode is protected by the hidden chiral symmetry
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Multiple Bulk-Boundary Correspondences and Anomalous Modes in a Non-Hermitian Creutz Ladder
A non-Hermitian Creutz ladder with gain-loss and nonreciprocity exhibits multiple bulk-boundary correspondences and anomalous skin modes, with a hybrid spectral winding encoding localization of counterintuitive bulk modes.