Fig. 4: Zak phase reconstruction of Rice-Mele superradiance lattices.

a The Zak phase diagram of the RM model as a function of \({{\Delta }}_c\) and \({{\Omega }}_1 - {{\Omega }}_2\). b Locations of the anti-crossing points and c values of the Zak phases are measured along the yellow line in a with \({{\Omega }}_1 = 125\) MHz and \({{\Omega }}_1/{{\Omega }}_2 = 5.3\), compared with their theoretical values (dashed lines). The plots contain \(200\) data sets. d, f The WSLs and the absorption/reflection spectra with \(\theta _ - = 0.3\pi\), \(\theta _ + = 0.7\pi\), \({{\Delta }}_c = - 108\) MHz. e, g The WSLs and the absorption/reflection spectra with \(\theta _ - = 0.4\pi\), \(\theta _ + = 0.6\pi\), \({{\Delta }}_c = - 45\) MHz