187 citations · 886 across the 15 of their papers we have counts for
9 papers · 1 filter
Measuring the Chern-Simons invariant in quantum gases
Chang-Rui Yi, Jinlong Yu, Huan Yuan +5
Chern-Simons (CS) invariant is a fundamental topological invariant describing the topological invariance of 3D space based on the Chern-Simons field theory. To date, direct measure…
Observation of Kibble-Zurek Behavior across Topological Transitions of a Chern Band in Ultracold Atoms
Huan Yuan, Chang-Rui Yi, Jia-Yu Guo +5
The Kibble-Zurek (KZ) mechanism renders a theoretical framework for elucidating the formation of topological defects across continuous phase transitions. Nevertheless, it is not im…
Extracting the Quantum Geometric Tensor of an Optical Raman Lattice by Bloch State Tomography
Chang-Rui Yi, Jinlong Yu, Huan Yuan +6
In Hilbert space, the geometry of the quantum state is identified by the quantum geometric tensor (QGT), whose imaginary part is the Berry curvature and real part is the quantum me…
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 ideal Weyl semimetal band in ultracold quantum gas with 3D Spin-Orbit coupling
Zong-Yao Wang, Xiang-Can Cheng, Bao-Zong Wang +8
The Weyl semimetals [1-6] are three-dimensional (3D) gapless topological phases with Weyl cones in the bulk band, and host massless quasiparticles known as Weyl fermions which were…
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…
Observation of the Hopf Links and Hopf Fibration in a 2D topological Raman Lattice
Chang-Rui Yi, Jin-Long Yu, Wei Sun +3
A dynamical Hopf insulator is experimentally synthesized with a quenched two-dimensional quantum anomalous Hall system on a square Raman lattice. The quench dynamics for the quasim…
Uncover Topology by Quantum Quench Dynamics
Wei Sun, Chang-Rui Yi, Bao-Zong Wang +9
Topological quantum states are characterized by nonlocal invariants, and their detection is intrinsically challenging. Various strategies have been developed to study topological H…
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…