The first textbook to employ a unified approach to understanding quantum optics and quantum information Quantum Optics and Quantum Information introduces readers to the intricate relationship between the theory of light and its interaction with matter (quantum optics) and the quantum nature of a new paradigm of information processing (quantum information). Combining the two subject areas, the book introduces basic principles of quantum optics - ranging from cavity QED and the Jaynes-Cummings model to phase space functions, the detector theory, and open quantum systems - and discusses physical implementations of various quantum information processing devices. Numerous figures, color images, full references, and end-of-chapter problems are integrated throughout the text. Designed to provide readers with a fuller understanding of both quantum optics and quantum information, this innovative textbook: Explains the physics of contemporary concepts for architectures for quantum information processing Discusses the foundations of quantum mechanics, including decoherence, quasi-probability distributions, and entanglement Provides detailed coverage of cooling and trapping of atoms and ions with photons and their manipulation Introduces standard quantum information applications such as quantum computation and quantum cryptography Includes a reference section enabling quick look-up of a broad range of quantum states and their properties Quantum Optics and Quantum Information is an ideal textbook for upper-level undergraduate and graduate students in physics, and a highly useful reference for theoretical physicists, experimental physicists, and atomic physicists.