Phase Change Materials-Based Photonic Computing provides a clear introduction to the field, introducing concepts of photonics, computing, phase change materials and future outlooks. Phase change materials are well known and studied in many contexts, and photonics is a longstanding field, with photonic neuromorphic computing recently gathering interest. However, the two fields are disparate and few people understand the key concepts needed to integrate the two. This book will be the first to do so in this promising field. It is suitable for researchers and practitioners in academia and industry working in the disciplines of materials science and engineering, electrical engineering and computing. - Introduces the advanced fundamental concepts of photonics computing and phase change materials - Reviews the remaining challenges to translation, opportunities and future outlooks - Addresses definitions, historical context, foundational concepts and the latest advances of phase change materials-based photonics computing