Fig. 2: (1 + 1)D time-independent analogue of the SSH model with local periodic perturbations at the interface and J1 (J2) being the large (small) hopping amplitude. | Light: Science & Applications

Fig. 2: (1 + 1)D time-independent analogue of the SSH model with local periodic perturbations at the interface and J1 (J2) being the large (small) hopping amplitude.

From: Limits of topological protection under local periodic driving

Fig. 2

The Floquet index n enumerates coupled SSH chains, each with the overall potential −nω. Red and blue arrows denote the coupling between Floquet replicas (n) and sites (s) created by the harmonic driving of local couplings with amplitude ∆J and on-site potential with ∆V (compare with Eq. (12))

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