Quantum-dot based photonic quantum networks

TL;DR

This paper reviews the advancements in quantum-dot based photonic quantum networks, highlighting their potential for high-cooperativity quantum interfaces and long-distance entanglement distribution in quantum communication.

Contribution

It provides a comprehensive overview of current quantum dot devices and their applications in building scalable photonic quantum networks.

Findings

Quantum dots enable near-unity coupling with photonic modes.

High-cooperativity photon-emitter interfaces are achievable.

Progress towards long-distance entanglement distribution is reviewed.

Abstract

Quantum dots embedded in photonic nanostructures have in recent years proven to be a very powerful solid-state platform for quantum optics experiments. The combination of near-unity radiative coupling of a single quantum dot to a photonic mode and the ability to eliminate decoherence processes imply that an unprecedented light-matter interface can be obtained. As a result, high-cooperativity photon-emitter quantum interfaces can be constructed opening a path-way to deterministic photonic quantum gates for quantum-information processing applications. In the present manuscript, I review current state-of-the-art on quantum dot devices and their applications for quantum technology. The overarching long-term goal of the research field is to construct photonic quantum networks where remote entanglement can be distributed over long distances by photons.