Photon-Assisted Quasiparticle Transport and Andreev Transport through an Interacting Quantum Dot

TL;DR

This paper investigates photon-assisted quasiparticle and Andreev transport in an interacting quantum dot coupled to superconductors, deriving a general current formula and exploring transport phenomena under time-dependent voltages.

Contribution

It introduces a comprehensive formula for current in such systems and analyzes photon-assisted and Andreev transport in interacting quantum dots.

Findings

Derived a general nonequilibrium Green's function formula for current.

Analyzed photon-assisted quasiparticle transport in superconducting quantum dots.

Studied resonant Andreev transport in strongly correlated quantum dots.

Abstract

Resonant tunneling through a quantum dot coupled to superconducting reservoirs in the presence of time-dependent external voltage has been studied. A general formula of the current is derived based on the nonequilibrium Green's function technique. Using this formula photon-assisted quasiparticle transport has been investigated for the quantum dot connected to superconductors. In addition, resonant Andreev transport through a strongly correlated quantum dot connected to a normal metallic lead and a superconducting lead is studied.