Material platforms for integrated quantum photonics

TL;DR

This paper reviews various material platforms for integrated quantum photonics, discussing their advantages, limitations, current integration levels, and potential composite approaches to advance quantum photonic technologies.

Contribution

It provides a comprehensive comparison of multiple material platforms for quantum photonics, highlighting their strengths, weaknesses, and integration progress.

Findings

Silicon and other platforms have diverse capabilities for quantum photonic devices.

Current integration levels vary significantly across platforms.

Composite approaches may enhance future quantum photonic systems.

Abstract

On-chip integration of quantum optical systems could be a major factor enabling photonic quantum technologies. Unlike the case of electronics, where the essential device is a transistor and the dominant material is silicon, the toolbox of elementary devices required for both classical and quantum photonic integrated circuits is vast. Therefore, many material platforms are being examined to host the future quantum photonic computers and network nodes. We discuss the pros and cons of several platforms for realizing various elementary devices, compare the current degrees of integration achieved in each platform and review several composite platform approaches.