Designs of magnetic atom-trap lattices for quantum simulation experiments

TL;DR

This paper presents the design and realization of magnetic atom-trap lattices on magnetic films for quantum simulation, enabling control over trap geometries and the study of quantum spin physics with Rydberg atoms.

Contribution

It introduces novel magnetic trapping geometries, including defect-engineered lattices and tapered structures, for ultracold atom experiments in quantum simulation.

Findings

Created various lattice geometries including triangular, kagome, and hexagonal.

Demonstrated control over trap barriers and boundaries in compact setups.

Showcased potential for studying quantum spin models with Rydberg atoms.

Abstract

We have designed and realized magnetic trapping geometries for ultracold atoms based on permanent magnetic films. Magnetic chip based experiments give a high level of control over trap barriers and geometric boundaries in a compact experimental setup. These structures can be used to study quantum spin physics in a wide range of energies and length scales. By introducing defects into a triangular lattice, kagome and hexagonal lattice structures can be created. Rectangular lattices and (quasi-)one-dimensional structures such as ladders and diamond chain trapping potentials have also been created. Quantum spin models can be studied in all these geometries with Rydberg atoms, which allow for controlled interactions over several micrometers. We also present some nonperiodic geometries where the length scales of the traps are varied over a wide range. These tapered structures offer another way to transport large numbers of atoms adiabatically into subwavelength traps and back.