Topological interface engineering and defect crossing in ultracold atomic gases

TL;DR

This paper proposes a feasible experimental scheme for engineering topological interfaces in ultracold atomic gases, enabling the study of defect dynamics and topological properties in complex many-particle quantum states.

Contribution

It introduces a novel method combining atomic spin structures and local interaction control to create and study topologically nontrivial interfaces in spinor Bose-Einstein condensates.

Findings

Demonstrates a scheme for topological interface engineering in ultracold gases

Shows how to study defect crossing and textures across interfaces

Provides a pathway for exploring complex topological phenomena in quantum gases

Abstract

We propose an experimentally feasible scheme for topological interface engineering and show how it can be used for studies of dynamics of topologically nontrivial interfaces and perforation of defects and textures across such interfaces. The method makes use of the internal spin structure of the atoms together with locally applied control of interaction strengths to create many-particle states with highly complex topological properties. In particular, we consider a constructed coherent interface between topologically distinct phases of spinor Bose-Einstein condensates.