Proposal For A Quantum Hall Pump

TL;DR

This paper proposes a quantum Hall pump device that can accurately measure the charge of quasiparticles by pumping integer or fractional charges in quantum Hall regimes, advancing quantum metrology.

Contribution

It introduces a novel quantum Hall pump device capable of measuring quasiparticle charge with high precision, bridging integer and fractional quantum Hall effects.

Findings

Pumps integer electrons in the integer regime

Pumps fractional quasiparticles in the fractional regime

Potential for precise quasiparticle charge measurement

Abstract

A device is proposed that is similar in spirit to the electron turnstile except that it operates within a quantum Hall fluid. In the integer quantum Hall regime, this device pumps an integer number of electrons per cycle. In the fractional regime, it pumps an integer number of fractionally charged quasiparticles per cycle. It is proposed that such a device can make an accurate measurement of the charge of the quantum Hall effect quasiparticles.