766 citations · 3.1k across the 31 of their papers we have counts for
31 papers
Surface Chern-Simons theory for third-order topological insulators and superconductors
Zhi-Hao Huang, Yi Tan, Wei Jia +2
Three-dimensional 3rd-order topological insulators (TOTIs) and superconductors (TOTSCs), as the highestorder topological phases hosting zero corner modes in physical dimension, has…
Topological spin-orbit-coupled fermions beyond rotating wave approximation
Han Zhang, Wen-Wei Wang, Chang Qiao +6
The realization of spin-orbit-coupled ultracold gases has driven a wide range of researches and is typically based on the rotating wave approximation (RWA). By neglecting the count…
Tuning anomalous Floquet topological bands with ultracold atoms
Jin-Yi Zhang, Chang-Rui Yi, Long Zhang +7
The Floquet engineering opens the way to create new topological states without counterparts in static systems. Here, we report the experimental realization and characterization of…
Unified characterization for higher-order topological phase transitions
Wei Jia, Xin-Chi Zhou, Lin Zhang +2
Higher-order topological phase transitions (HOTPTs) are associated with closing either the bulk energy gap (type-I) or boundary energy gap (type-II) without changing symmetry, and…
Dynamical detection of mean-field topological phases in an interacting Chern insulator
Wei Jia, Long Zhang, Lin Zhang +1
Interactions generically have important effects on the topological quantum phases. For a quantum anomalous Hall (QAH) insulator, the presence of interactions can qualitatively chan…
Unconventional Floquet topological phases from quantum engineering of band inversion surfaces
Long Zhang, Xiong-Jun Liu
Floquet engineering provides a toolbox for the realization of novel quantum phases without static counterparts, while conventionally the realization may rely on the manipulation of…
Realization of Qi-Wu-Zhang model in spin-orbit-coupled ultracold fermions
Ming-Cheng Liang, Yu-Dong Wei, Long Zhang +6
Based on the optical Raman lattice technique, we experimentally realize the Qi-Wu-Zhang model for quantum anomalous Hall phase in ultracold fermions with two-dimensional (2D) spin-…
Dynamically characterizing topological phases by high-order topological charges
Wei Jia, Lin Zhang, Long Zhang +1
We propose a new theory to characterize equilibrium topological phase with non-equilibrium quantum dynamics by introducing the concept of high-order topological charges, with novel…
Unitary Symmetry-Protected Non-Abelian Statistics of Majorana Modes
Jian-Song Hong, Ting-Fung Jeffrey Poon, Long Zhang +1
Symmetry-protected topological superconductors (TSCs) can host multiple Majorana zero modes (MZMs) at their edges or vortex cores, while whether the Majorana braiding in such syste…
Deconfined Quantum Phase Transition of a Higher-Order Symmetry-Protected Topological State
Chen Peng, Long Zhang, Zhong-Yi Lu
A higher-order (HO) symmetry-protected topological (SPT) state can be realized in a plaquette-modulated square lattice antiferromagnet, which hosts a spin- degenerate mode on…
Stability of dynamical topology against dynamical noise in quantum quenches
Lin Zhang, Long Zhang, Xiong-Jun Liu
Equilibrium topological phases are robust against weak static disorder but may break down in the strong disorder regime. Here we explore the stability of the quench-induced emergen…
Unified theory to characterize Floquet topological phases by quench dynamics
Long Zhang, Lin Zhang, Xiong-Jun Liu
The conventional characterization of periodically driven systems usually necessitates the time-domain information beyond Floquet bands, hence lacking universal and direct schemes o…
One dimensional quasiperiodic mosaic lattice with exact mobility edges
Yucheng Wang, Xu Xia, Long Zhang +5
The mobility edges (MEs) in energy which separate extended and localized states are a central concept in understanding the localization physics. In one-dimensional (1D) quasiperiod…
Quantum simulation for three-dimensional chiral topological insulator
Wentao Ji, Lin Zhang, Mengqi Wang +8
Quantum simulation, as a state-of-art technique, provides the powerful way to explore topological quantum phases beyond natural limits. Nevertheless, a previously-not-realized thre…
Realization and detection of non-ergodic critical phases in optical Raman lattice
Yucheng Wang, Long Zhang, Sen Niu +2
The critical phases, being delocalized but non-ergodic, are fundamental phases which are different from both the many-body localization and ergodic extended quantum phases, and hav…
Characterizing topological phases by quantum quenches: A general theory
Long Zhang, Lin Zhang, Xiong-Jun Liu
We investigate a generic dynamical theory to characterize topological quantum phases by quantum quenches, and study the emergent topology of quantum dynamics when the quenches star…
Observing topological charges and dynamical bulk-surface correspondence with ultracold atoms
Chang-Rui Yi, Long Zhang, Lin Zhang +8
In quenching a topological phase across phase transition, the dynamical bulk-surface correspondence emerges that the bulk topology of -dimensional (D) phase relates to the no…
Experimental observation of dynamical bulk-surface correspondence for topological phases
Ya Wang, Wentao Ji, Zihua Chai +12
We experimentally demonstrate a dynamical classification approach for investigation of topological quantum phases using a solid-state spin system through nitrogen-vacancy (NV) cent…
Emergent topology and symmetry-breaking order in correlated quench dynamics
Long Zhang, Lin Zhang, Ying Hu +2
Quenching a quantum system involves three basic ingredients: the initial phase, the post-quench target phase, and the non-equilibrium dynamics which carries the information of the…
Dynamical detection of topological charges
Long Zhang, Lin Zhang, Xiong-Jun Liu
We propose a generic scheme to characterize topological phases via detecting topological charges by quench dynamics. A topological charge is defined as the chirality of a monopole…
Observation of nodal-line semimetal with ultracold fermions in an optical lattice
Bo Song, Chengdong He, Sen Niu +4
Observation of topological phases beyond two-dimension (2D) has been an open challenge for ultracold atoms. Here, we realize for the first time a 3D spin-orbit coupled nodal-line s…
Spin-orbit coupling and topological phases for ultracold atoms
Long Zhang, Xiong-Jun Liu
Cold atoms with laser-induced spin-orbit (SO) interactions provide promising platforms to explore novel quantum physics, in particular the exotic topological phases, beyond natural…
Dynamical classification of topological quantum phases
Lin Zhang, Long Zhang, Sen Niu +1
Topological phase of matter is now a mainstream of research in condensed matter physics, of which the classification, synthesis, and detection of topological states have brought ex…
High Controllable and Robust 2D Spin-Orbit Coupling for Quantum Gases
Wei Sun, Bao-Zong Wang, Xiao-Tian Xu +7
We report the realization of a robust and highly controllable two-dimensional (2D) spin-orbit (SO) coupling with topological non-trivial band structure. By applying a retro-reflect…