Atomic-phase interference devices based on ring-shaped Bose-Einstein condensates: Two ring case

TL;DR

This paper theoretically studies a pair of coupled ring-shaped Bose-Einstein condensates, called an Atomic-Phase Interference Device (APHID), demonstrating its sensitivity to rotation and potential for quantum interference applications.

Contribution

It introduces and analyzes a two-ring APHID, the simplest form of atomic-phase interference device, highlighting its ground-state properties and rotation sensitivity.

Findings

The two-ring APHID exhibits quantum interference effects.

It is sensitive to rotational motion.

The device functions as an atomic analog of SQUIDs.

Abstract

We theoretically investigate the ground-state properties and quantum dynamics of a pair of adjacent ring-shaped Bose-Einstein condensates that are coupled via tunneling. This device, which is the analogue of a symmetric superconducting quantum interference device, is the simplest version of what we term an Atomic-Phase Interference Device (APHID). The two-ring APHID is shown to be sensitive to rotation.