Fig. 2. Light localization and light funneling for static control.
a Light localization at the corner skin modes located at (x, y) = (0, 0) for non-Hermitian parameter |δx | = |δy | = 0.175. Here a single pulse is initialized at (x, y) = (0, 0) in the up channel. b Light funneling for the same lattice parameter and pulse initialization, but the corner skin mode is located at (x, y) = (−10, 10). Here the skin effect allows light to flow to the corner skin mode and localize there. In both a and b, from left to right the snapshots are shown for time steps 1, 9, 21, respectively.