Control of tunneling in an atomtronic switching device

TL;DR

This paper demonstrates how to achieve controllable switching in a quantum atomtronic device using dipolar bosons in a three-well system, analyzing dynamics in different regimes to enable precise control.

Contribution

It introduces a method for implementing switching in a three-well dipolar boson system, exploring control mechanisms via external fields in both integrable and non-integrable regimes.

Findings

Switching behavior depends on external field tuning.

Control is possible in both integrable and non-integrable regimes.

System can be toggled between on and off states through parameter variation.

Abstract

The precise control of quantum systems will play a major role in the realization of atomtronic devices. As in the case of electronic systems, a desirable property is the ability to implement switching. Here we show how to implement switching in a model of dipolar bosons confined to three coupled wells. The model describes interactions between bosons, tunneling of bosons between adjacent wells, and the effect of an external field. We conduct a study of the quantum dynamics of the system to probe the conditions under which switching behavior can occur. The analysis considers both integrable and non-integrable regimes within the model. Through variation of the external field, we demonstrate how the system can be controlled between various switched-on and switched-off configurations.