Coherent splitting of two-dimensional Bose gases in magnetic potentials

TL;DR

This paper demonstrates the first coherent splitting of two-dimensional Bose gases using magnetic potentials, advancing the study of out-of-equilibrium dynamics and superfluid phase transitions in 2D quantum systems.

Contribution

It introduces a novel magnetic trapping method for coherently splitting 2D Bose gases and enhances imaging techniques for studying their relaxation dynamics.

Findings

First demonstration of coherent splitting of 2D Bose gases

Improved fringe contrast by selective imaging of atom clouds

Foundation for future studies on quantum quenches in 2D gases

Abstract

Investigating out-of-equilibrium dynamics with two-dimensional (2D) systems is of widespread theoretical interest, as these systems are strongly influenced by fluctuations and there exists a superfluid phase transition at a finite temperature. In this work, we realise matter-wave interference for degenerate Bose gases, including the first demonstration of coherent splitting of 2D Bose gases using magnetic trapping potentials. We improve the fringe contrast by imaging only a thin slice of the expanded atom clouds, which will be necessary for subsequent studies on the relaxation of the gas following a quantum quench.