Resonance energy and charge pumping through quantum SINIS contacts

TL;DR

This paper introduces a quantum pumping mechanism in SINIS junctions driven by spectral flow and minigap dynamics, resulting in giant dc current peaks at specific voltages.

Contribution

It presents a novel spectral flow-based quantum pumping mechanism in SINIS junctions, highlighting the role of minigap resonance with Josephson frequency.

Findings

Giant dc current peaks at rational voltages

Spectral flow mediates quantum pumping in SINIS contacts

Minigap closing dynamics are crucial for the effect

Abstract

We propose a mechanism of quantum pumping mediated by the spectral flow in a voltage-biased SINIS quantum junction and realized via the sequential closing of the minigaps in the energy spectrum in resonance with the Josephson frequency. We show that the dc current exhibits giant peaks at rational voltages.