# Designing Arbitrary One-dimensional Potentials on an Atom Chip

## TL;DR

This paper demonstrates the creation of customizable one-dimensional potentials for ultracold atoms on an atom chip using laser shaping, enabling advanced studies in quantum dynamics and simulations.

## Contribution

It introduces a method to generate arbitrary 1D optical potentials on an atom chip by laser shaping with a digital micro-mirror device, combining optical and magnetic trapping advantages.

## Key findings

- Realized various 1D potentials including box-like and sinusoidally modulated traps.
- Enabled tunable barriers within the potentials for quantum control.
- Provided new tools for studying 1D quantum systems and quantum thermodynamics.

## Abstract

We use laser light shaped by a digital micro-mirror device to realize arbitrary optical dipole potentials for one-dimensional (1D) degenerate Bose gases of 87Rb trapped on an atom chip. Superposing optical and magnetic potentials combines the high flexibility of optical dipole traps with the advantages of magnetic trapping, such as effective evaporative cooling and the application of radio-frequency dressed state potentials. As applications, we present a 160 ${\mu}$m long box-like potential with a central tuneable barrier, a box-like potential with a sinusoidally modulated bottom and a linear confining potential. These potentials provide new tools to investigate the dynamics of 1D quantum systems and will allow us to address exciting questions in quantum thermodynamics and quantum simulations.