Authored by a highly regarded researcher and pioneer in the field, Quantum Entanglement and Interferometry offers a complete revision to the subject, including basic theory and concepts, with continued emphasis on experimental aspects. The author provides a thorough overview on basic methods of classical and quantum measurements in optical science, paints a picture of light in terms of Einstein's quantized electromagnetic wavepacket and the quantum mechanical concept of photon. In addition, readers will become familiarized with quantum superposition, including the superpositions of one-photon state, two-photon state, and multi-photon state, which saliently capture the essential physics of all optical observations. This book introduces and analyzes the historical and the most newly developed and exciting experimental research in the field. Discussions of timely topics in the field of quantum entanglement and multi-photon interferometry are paramount as an update to the existing literature. The broad coverage of concepts and tools and its experimental emphasis set it apart from other available resources.