Fig. 3: Eigenstate windings.
From: Observing half-integer topological winding numbers in non-Hermitian synthetic lattices
a, d, g The projective transmission intensity spectra on the Pauli operators of \({\sigma }_{x}\) (top) and \({\sigma }_{y}\) (bottom) along momentum \(k\) when parameters \((\gamma ,\eta ,\delta )\) are \((0.35,-0.5\pi ,0)\), \((0.35,-0.5\pi ,\pi )\) and \((0.35,-0.5\pi ,0.4\pi )\), respectively. b, e, h The normalized transmission intensities extracted from one of the close bands in a, d, g. \({I}_{x}\) (blue curves) are extracted from the band marked by the blue arrows, and \({I}_{y}\) (red curves) are extracted from the band marked by the red arrows. c, f, i The normalised unit vectors \([{n}_{x}(k),{n}_{y}(k)]\) as \(k\) changing from 0 to \(2\pi\). A reference unit circle is indicated by the gray circle
