Magnetotransport in a time-modulated double quantum point contact system

TL;DR

This paper develops a time-dependent scattering theory to analyze magnetotransport in a double quantum point contact system with time modulation and magnetic field, revealing tunable transport features and potential quantum switching applications.

Contribution

It introduces a novel theoretical framework for studying time-modulated quantum transport under magnetic fields, enabling detailed analysis of inter-subband and inter-sideband transitions.

Findings

Magnetotransport properties are tunable via split-gates and magnetic field.

Magnetic field induces Fano resonance features.

Potential application in quantum switching devices.

Abstract

We report on a time-dependent Lippmann-Schwinger scattering theory that allows us to study the transport spectroscopy in a time-modulated double quantum point contact system in the presence of a perpendicular magnetic field. Magnetotransport properties involving inter-subband and inter-sideband transitions are tunable by adjusting the time-modulated split-gates and the applied magnetic field. The observed magnetic field induced Fano resonance feature may be useful for the application of quantum switching.