We study a non-Hermitian two-level system with square-wave modulated dissipation and coupling.Based on the Floquet theory,we achieve an effective Hamiltonian fr
High temperature superconductivity in cuprates is realized by doping the Mott insulator with charge carriers.A central issue is how such an insulating state can
One of the appealing features of topological systems is the presence of robust edge modes.Under a sudden quantum quench,the edge modes survive for a characteris