138 citations · 2.2k across the 65 of their papers we have counts for
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Floquet higher-order topological phases in momentum space
Longwen Zhou
Higher-order topological phases (HOTPs) are characterized by symmetry-protected bound states at the corners or hinges of the system. In this work, we reveal a momentum-space counte…
Floquet dynamical quantum phase transitions in periodically quenched systems
Longwen Zhou, Qianqian Du
Dynamical quantum phase transitions (DQPTs) are characterized by nonanalytic behaviors of physical observables as functions of time. When a system is subject to time-periodic modul…
Super-exponential diffusion in nonlinear non-Hermitian systems
Wen-Lei Zhao, Longwen Zhou, Jie Liu +2
We investigate the quantum diffusion of a periodically kicked particle subjecting to both nonlinearity induced self-interactions and -symmetric potentials. We find th…
Dual topological characterization of non-Hermitian Floquet phases
Longwen Zhou, Yongjian Gu, Jiangbin Gong
Non-Hermiticity is expected to add far more physical features to the already rich Floquet topological phases of matter. Nevertheless, a systematic approach to characterize non-Herm…
Non-Hermitian Floquet phases with even-integer topological invariants in a periodically quenched two-leg ladder
Longwen Zhou
Periodically driven non-Hermitian systems could possess exotic nonequilibrium phases with unique topological, dynamical and transport properties. In this work, we introduce an expe…
Interband coherence induced correction to Thouless pumping: possible observation in cold-atom systems
Gudapati Naresh Raghava, Longwen Zhou, Jiangbin Gong
In Thouless pump, the charge transport in a one-dimensional insulator over an adiabatic cycle is topologically quantized. For nonequilibrium initial states, however, interband cohe…
Non-Hermitian Floquet second order topological insulators in periodically quenched lattices
Jiaxin Pan, Longwen Zhou
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 latt…