ac-driven atomic quantum motor

TL;DR

This paper introduces a novel ac-driven quantum motor using two interacting ultracold atoms in a ring-shaped optical lattice, demonstrating controlled motion and work performance against a load.

Contribution

The work presents the design and analysis of a new quantum motor mechanism driven by ac fields with potential applications in quantum nanotechnology.

Findings

The quantum motor achieves a non-zero asymptotic velocity.

It can perform work against a constant load.

The system's behavior is robust under fixed initial conditions.

Abstract

We invent an ac-driven quantum motor consisting of two different, interacting ultracold atoms placed into a ring-shaped optical lattice and submerged in a pulsating magnetic field. While the first atom carries a current, the second one serves as a quantum starter. For fixed zero-momentum initial conditions the asymptotic carrier velocity converges to a unique non-zero value. We also demonstrate that this quantum motor performs work against a constant load.