Control of atomic currents using a quantum stirring device

TL;DR

This paper introduces a quantum stirring device for Bose-Einstein condensates that generates a circulating current through cyclic adiabatic control, offering a new method to probe interatomic interactions.

Contribution

It proposes a novel quantum pump device integrated into a closed circuit for BECs, enabling controlled atomic currents and interaction studies.

Findings

Feasibility of the quantum stirring device demonstrated

Device can produce a DC circulating current

Potential to probe interatomic interactions

Abstract

We propose a BEC stirring device which can be regarded as the incorporation of a quantum pump into a closed circuit: it produces a DC circulating current in response to a cyclic adiabatic change of two control parameters of an optical trap. We demonstrate the feasibility of this concept and point out that such device can be utilized in order to probe the interatomic interactions.