The Floquet engineering opens the way to create new topological states without
counterparts in static systems. Here, we report the experimental realization and …

The non-Hermiticity caused breakdown of the bulk-boundary correspondence (BBC) in
topological phase transition was cured by the skin effect for the systems with chiral symmetry …

Periodically driven systems have emerged as a useful technique to engineer the properties
of quantum systems, and are in the process of being developed into a standard toolbox for …

The Hall response can be dramatically different from its quantized value in materials with
broken inversion symmetry. This stems from the leading Hall contribution beyond the linear …

Quantum technology resorts to efficient utilization of quantum resources to realize technique
innovation. The systems are controlled such that their states follow the desired manners to …

Second-order topological insulator (SOTI) is featured with the presence of (d− 2)-
dimensional boundary states in d-dimension systems. The non-Hermiticity induced …

The conventional characterization of periodically driven systems usually necessitates the
time-domain information beyond Floquet bands, hence lacking universal and direct …

Higher-order topological phases are characterized by protected states localized at the
corners or hinges of the system. By applying time-periodic quenches to a two-dimensional …

It is generally believed that non-Hermiticity can transform Weyl semimetals into Weyl-
exceptional-ring semimetals. However, this belief is from the systems without skin effect. We …

Motivated by the recent experimental realization of the half-quantized Hall effect phase in a
three-dimensional (3D) semimagnetic topological insulator [M. Mogi, Nat. Phys. 18, 390 …