Quantum Pumping with Ultracold Atoms on Microchips: Fermions versus Bosons

TL;DR

This paper proposes a method to simulate quantum electron pumping using ultracold atoms in microchip traps, comparing bosonic and fermionic behaviors, and assesses experimental feasibility with specific atomic species.

Contribution

It introduces a novel simulation approach for quantum pumping with ultracold atoms and analyzes differences between bosons and fermions in this context.

Findings

Identifies geometric and resonance features in quantum pumping for both particle types.

Calculates theoretical expectations for atomic currents in proposed setups.

Assesses experimental feasibility with specific ultracold atomic species.

Abstract

We present a design for simulating quantum pumping of electrons in a mesoscopic circuit with ultra-cold atoms in a micro-magnetic chip trap. We calculate theoretical results for quantum pumping of both bosons and fermions, identifying differences and common features, including geometric behavior and resonance transmission. We analyze the feasibility of experiments with bosonic $^{87}$Rb and fermionic $^{40}$K atoms with an emphasis on reliable atomic current measurements.