Chiral Topological Orders in an Optical Raman Lattice

Abstract

We find an optical Raman lattice without spin-orbit coupling showing chiral topological orders for cold atoms. Two incident plane-wave lasers are applied to generate simultaneously a double-well square lattice and periodic Raman couplings, the latter of which drive the nearest-neighbor hopping and create a staggered flux pattern across the lattice. Such a minimal setup is can yield the quantum anomalous Hall effect in the single particle regime, while in the interacting regime it achieves the $J_1$-$J_2$-$K$ model with all parameters controllable, which supports a chiral spin liquid phase. We further show that heating in the present optical Raman lattice is reduced by more than one order of magnitude compared with the conventional laser-assisted tunneling schemes. This suggests that the predicted topological states be well reachable with the current experimental capability.

5 pages, 3 figures, plus supplementary material. The model realization is updated

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Cited by in corpus (17)

• Topological quantum matter with cold atoms
• Topological phase transitions in the repulsively interacting Haldane-Hubbard model
• Haldane-Hubbard Mott Insulator: From Tetrahedral Spin Crystal to Chiral Spin Liquid
• Realization of Qi-Wu-Zhang model in spin-orbit-coupled ultracold fermions
• Emergence of Chiral Spin Liquids via Quantum Melting of Non-Coplanar Magnetic Orders
• Quantum Hall states for Rydberg atoms with laser-assisted dipole-dipole interactions
• Chirality-enabled optical dipole potential energy for two-level atoms
• Dynamically characterizing topological phases by high-order topological charges
• Chiral spin liquid and quantum phase diagram of spin-$1/2$ $J_1$-$J_2$-$J_{\chi }$ model on the square lattice
• Emergent topology and symmetry-breaking order in correlated quench dynamics
• A Scaling Behavior of Bloch Oscillation in Weyl Semimetals
• Realization and detection of Kitaev quantum spin liquid with Rydberg atoms
• Quantum quenches in a pseudo-Hermitian Chern insulator
• Magnetic effects on Chern Kondo insulator
• Chiral spin liquid phase in an optical lattice at mean-field level
• Ultracold atomic lattice systems for simulating topological phases: A review
• Preparation and observation of anomalous counterpropagating edge states in a periodically driven optical Raman lattice