Spin-Photon Entangling Diode

TL;DR

This paper introduces a semiconductor diode device capable of electrically generating entangled electron spin-photon states, enabling scalable quantum communication by linking distant quantum memories.

Contribution

It presents a novel device design combining a p-i-n diode with a double quantum dot for controlled spin-photon entanglement.

Findings

Device can generate entangled spin-photon pairs electrically.

Control over diode bias and gating enables entanglement on demand.

Analysis shows practical feasibility for quantum networks.

Abstract

We propose a semiconductor device that can electrically generate entangled electron spin-photon states, providing a building block for entanglement of distant spins. The device consists of a p-i-n diode structure that incorporates a coupled double quantum dot. We show that electronic control of the diode bias and local gating allow for the generation of single photons that are entangled with a robust quantum memory based on the electron spins. Practical performance of this approach to controlled spin-photon entanglement is analyzed.