Independent electrical tuning of separated quantum dots in coupled photonic crystal cavities

TL;DR

This paper demonstrates a method for independently tuning separated quantum dots within coupled photonic crystal cavities using proton implantation to electrically isolate sections of the device, advancing quantum networking capabilities.

Contribution

It introduces a novel proton implantation technique enabling independent electrical tuning of separated quantum dots in coupled photonic crystal cavities.

Findings

Successful independent tuning of quantum dots achieved

Proton implantation effectively isolates diode sections

Enhances control for quantum photonic devices

Abstract

Systems of photonic crystal cavities coupled to quantum dots are a promising architecture for quantum networking and quantum simulators. The ability to independently tune the frequencies of laterally separated quantum dots is a crucial component of such a scheme. Here, we demonstrate independent tuning of laterally separated quantum dots in photonic crystal cavities coupled by in-plane waveguides by implanting lines of protons which serve to electrically isolate different sections of a diode structure.