A ring accelerator for matter-wave solitons

TL;DR

This paper introduces a novel method to accelerate and control ultracold atom clouds in a ring trap using amplitude-modulated optical potentials, enabling precise manipulation of matter-wave solitons.

Contribution

It presents a new technique for matter-wave soliton acceleration and control in ring traps, with practical implementation in current experimental setups.

Findings

Successful numerical demonstration of atom cloud acceleration

Control of atomic cloud spreading via scattering length tuning

Potential for robust soliton manipulation in cold atom experiments

Abstract

We describe a new technique to accelerate and control a confined cloud of ultracold neutral atoms. In our configuration, a Bose-Einstein Condensate trapped in a ring is accelerated by using an amplitude-modulated optical potential. The spreading of the atomic cloud is avoided by an adequate tuning of the scattering length. We also discuss other variations that offer new possibilities of robust control of atomic solitons. Our numerical results show that this cold matter accelerator is easily accessible in the frame of current experiments.