Synchronized single electron emission from dynamical quantum dots

TL;DR

The paper demonstrates synchronized single-electron emission from multiple quantum dots using a single modulated gate, overcoming uniformity challenges via the decay cascade regime, with potential applications in nanoelectronics and quantum metrology.

Contribution

It introduces a method to synchronize quantum dots for charge pumping by operating in the decay cascade regime, reducing uniformity constraints.

Findings

Successful synchronization of quantum dots achieved

Decay cascade regime enables uniform charge emission

Potential for improved nanoelectronic and quantum measurement devices

Abstract

We study synchronized quantized charge pumping through several dynamical quantum dots (QDs) driven by a single time modulated gate signal. We show that the main obstacle for synchronization being the lack of uniformity can be overcome by operating the QDs in the decay cascade regime. We discuss the mechanism responsible for lifting the stringent uniformity requirements. This enhanced functionality of dynamical QDs might find applications in nanoelectronics and quantum metrology.