Robust single-parameter quantized charge pumping

TL;DR

This paper presents a robust single-parameter charge pump in an AlGaAs-GaAs nanowire, demonstrating increased robustness with rf power, and highlighting its potential as a scalable quantized current source.

Contribution

It introduces a simple, robust charge pumping scheme based on single-parameter modulation in a nanowire device, enhancing stability against signal variations.

Findings

Quantized charge pumping is robust against signal variations.

Robustness increases with applied rf power.

Device is suitable for scalable quantized current sources.

Abstract

This paper investigates a scheme for quantized charge pumping based on single-parameter modulation. The device was realized in an AlGaAs-GaAs gated nanowire. We find a remarkable robustness of the quantized regime against variations in the driving signal, which increases with applied rf power. This feature together with its simple configuration makes this device a potential module for a scalable source of quantized current.