Ring-shaped atom-trap lattices using multipole dressing fields

TL;DR

This paper introduces a novel method to create closed-loop, ring-shaped atom-trap lattices for ultra-cold atoms using static and radio-frequency magnetic fields, enabling dynamic control and potential applications in quantum simulations and interferometry.

Contribution

The authors propose a new technique combining static and RF magnetic fields to generate state-dependent, dynamically controllable ring-shaped atom traps with simple magnetic control.

Findings

Analytical description of trap lattice generation

Design of state-dependent, controllable ring traps

Potential applications in quantum simulation and interferometry

Abstract

We present a method for the creation of closed-loop lattices for ultra-cold atoms using dressed potentials. We analytically describe the generation of trap lattices that are state-dependent, with dynamically controlled lattice depths and positioning. In a design akin to a synchronous motor, the potentials arise from the combination of a static, ring-shaped quadrupole field and multipole radio-frequency fields. Our technique relies solely on static and radio-frequency (rf) magnetic fields, enabling the creation of robust atom traps with simple control via rf amplitudes and phases. Potential applications of our scheme span the range from quantum many-body simulations to guided Sagnac interferometers.