Photovoltaic and Rectification Currents in Quantum Dots

TL;DR

This paper explores the statistical properties of direct current in quantum dots under ac excitation, analyzing symmetry behaviors and comparing theoretical predictions with experimental results across various frequencies and powers.

Contribution

It provides a combined theoretical and experimental analysis of rectification and photovoltaic currents in quantum dots, highlighting symmetry properties and regime-dependent behaviors.

Findings

Good agreement between theory and experiment across broad conditions

Symmetry properties of currents depend on magnetic field and excitation regime

Currents exhibit distinct behaviors in adiabatic and nonadiabatic regimes

Abstract

We investigate theoretically and experimentally the statistical properties of dc current through an open quantum dot subject to ac excitation of a shape-defining gate. The symmetries of rectification current and photovoltaic current with respect to applied magnetic field are examined. Theory and experiment are found to be in good agreement throughout a broad range of frequency and ac power, ranging from adiabatic to nonadiabatic regimes.