Dipolar magnetostirring protocol for three-well atomtronic circuits

TL;DR

This paper introduces a magnetostirring protocol to generate persistent currents in three-well atomtronic circuits, demonstrating its effectiveness and robustness across various interaction regimes and scalability for large boson numbers.

Contribution

The study presents a novel magnetostirring protocol for atomtronic circuits, including a predictive method for optimal parameters, enhancing scalability and applicability to macroscopic quantum systems.

Findings

Protocol successfully creates persistent currents in three-well circuits.

Robust across different interaction regimes.

Predictive method improves scalability and parameter tuning.

Abstract

We propose a magnetostirring protocol to create persistent currents on an annular system. Under this protocol, polar bosons confined in a three-well ring circuit reach a state with high average circulation. We model the system with an extended Bose-Hubbard Hamiltonian and show that the protocol can create circulation in an atomtronic circuit for a range of tunable parameters. The performance and robustness of this scheme are examined, in particular considering different interaction regimes. We also present a method for predicting the optimal protocol parameters, which improves protocol's scalability and enables its application to systems with large numbers of bosons. This overcomes computational limitations and paves the way for exploring macroscopic quantum phenomena.