Figure. 2 | System states evolving on the Riemann surfaces. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure. 2 | System states evolving on the Riemann surfaces.

Caption

Figure. 2 | System states evolving on the Riemann surfaces. The evolution trajectories in the Riemann surfaces formed by the real part Re(E) and imaginary part Im(E) of the energy spectra of H, when the symmetrical mode is input from the left (a-d) and right (e-h) ports, respectively. The dashed meshes represent the Hamiltonian parameters extended to infinity. The blue and red solid lines represent the parameter space boundary, associated with the eigenstates as [0,1]T and [1,0]T, respectively. The dashed lines refer to Hamiltonian hopping among A-, {B} and A+.

Credit

by Hang Zhu, Jian Wang, Andrea Alù and Lin Chen

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