Fundamentals of quantum entanglement Quantum entanglement (QE) is undoubtedly one of the most if not the most mysterious and yet most promising subjects of current physics. With applications in cryptographic space to space space to earth and fibre communications in addition to teleportation and quantum computing QE goes beyond fascination and into the pragmatic spheres of commerce and the military. This book is written by Professor Duarte an expert in the field of quantum optics. He provides the first side by side description of the philosophical path and the physical path to quantum entanglement and does so in a clear and cohesive manner. This is also the first book to describe and explain in a transparent exposition the interferometric derivation à la Dirac of the ubiquitous probability amplitude for quantum entanglement. The book will be useful for optical engineers working in the field of quantum entanglement and quantum communications as well as graduate students. The book includes 29 succinct to the point chapters and utilizes 10 useful appendices to further detail QE. Part of Series in Coherent Sources and Applications.