Integrated Photonic Platforms for Quantum Technology: A Review

TL;DR

This review discusses the current state of integrated photonic platforms for quantum information processing, emphasizing material choices and future prospects for scalable quantum devices using photonics.

Contribution

It provides a comprehensive overview of different photonic platforms and materials, highlighting their roles and challenges in advancing quantum technology.

Findings

Photonic platforms are crucial for quantum information processing.

Material selection impacts scalability and integration.

Current research is focused on finding universal materials like silicon.

Abstract

Quantum information processing has conceptually changed the way we process and transmit information. Quantum physics, which explains the strange behaviour of matter at the microscopic dimensions, has matured into a quantum technology that can harness this strange behaviour for technological applications with far-reaching consequences, which uses quantum bits (qubits) for information processing. Experiments suggest that photons are the most successful candidates for realising qubits, which indicates that integrated photonic platforms will play a crucial role in realising quantum technology. This paper surveys the various photonic platforms based on different materials for quantum information processing. The future of this technology depends on the successful materials that can be used to universally realise quantum devices, similar to silicon, which shaped the industry towards the end of the last century. Though a prediction is implausible at this point, we provide an overview of the current status of research on the platforms based on various materials.