Topological features without a lattice in Rashba spin-orbit coupled atoms.

ABSTRACT: Topological order can be found in a wide range of physical systems, from crystalline solids, photonic meta-materials and even atmospheric waves to optomechanic, acoustic and atomic systems. Topological systems are a robust foundation for creating quantized channels for transporting electrical current, light, and atmospheric disturbances. These topological effects are quantified in terms of integer-valued 'invariants', such as the Chern number, applicable to the quantum Hall effect, or the [Formula: see text] invariant suitable for topological insulators. Here, we report the engineering of Rashba spin-orbit coupling for a cold atomic gas giving non-trivial topology, without the underlying crystalline structure that conventionally yields integer Chern numbers. We validated our procedure by s

SUBMITTER: Valdes-Curiel A 

PROVIDER: S-EPMC7838279 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature