766 citations · 3.1k across the 31 of their papers we have counts for
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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…
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-…
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…
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…
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…
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…
Observation of symmetry-protected topological band with ultracold fermions
Bo Song, Long Zhang, Chengdong He +5
Symmetry plays a fundamental role in understanding complex quantum matter, particularly in classifying topological quantum phases, which have attracted great interests in the recen…
Realization of Two-Dimensional Spin-orbit Coupling for Bose-Einstein Condensates
Zhan Wu, Long Zhang, Wei Sun +7
Cold atoms with laser-induced spin-orbit (SO) interactions provide intriguing new platforms to explore novel quantum physics beyond natural conditions of solids. Recent experiments…
Softening of Roton and Phonon Modes in a Bose-Einstein Condensate with Spin-Orbit Coupling
Si-Cong Ji, Long Zhang, Xiao-Tian Xu +4
Roton-type excitations usually emerge from strong correlations or long-range interactions, as in superfluid helium or dipolar ultracold atoms. However, in weakly short-range intera…
Experimental Determination of the Finite-Temperature Phase Diagram of a Spin-Orbit Coupled Bose Gas
Si-Cong Ji, Jin-Yi Zhang, Long Zhang +6
Spin-orbit (SO) coupling has led to numerously exciting phenomena in electron systems, for instance, the recently discovered topological insulator. The synthesized SO coupling with…
Stability of Excited Dressed States with Spin-Orbit Coupling
Long Zhang, Jin-Yi Zhang, Si-Cong Ji +6
We study the decay behaviors of ultracold atoms in metastable states with spin-orbit coupling (SOC), and demonstrate that there are two SOC-induced decay mechanisms. One arises fro…
Collective Dipole Oscillation of a Spin-Orbit Coupled Bose-Einstein Condensate
Jin-Yi Zhang, Si-Cong Ji, Zhu Chen +9
We present an experimental study of the collective dipole oscillation of a spin-orbit coupled Bose-Einstein condensate in a harmonic trap. Dynamics of the center-of-mass dipole osc…