QUANTUM COMMUNICATION: PHYSICAL LAYER FUTURE OPTIC

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"This book is the second volume in the series New Era Electronics, a compilation of lecture notes defining the important concepts tied to the electronics transition happening in the 21st century. Quantum communication is introduced in this volume through the coverage of relevant, basic concepts of quantum mechanics and the introduction of quantum elements of a quantum optical communication system. Also included is a quantum description of electromagnetic fields and its interaction with atoms to generate, store, measure and control quantum optical information encoded onto optical fields. By taking a conceptual and less mathematical approach to quantum optics and quantum information, this book becomes accessible to broader audiences and engineers working actively in the technical field. The reader is only required to have a basic understanding of undergraduate linear algebra. Sample Chapter(s) Preface Contents: Introduction and Basic Concepts: Introduction Introduction to Quantum Mechanics Dirac Notation Density Operator Commutation Relation Entanglement Photons and Atoms for Quantum Optical Information: Quantum Electromagnetic Fields Optical Resonators Photon Correlation Atoms Light-Atom Interactions Strong Light-Atom Interactions Two-photon Transitions in Three-Level Atoms Dynamics of Density Operator Interaction of Light with Atoms in Free Space Quantum Communication: Quantum Key Distribution Quantum Teleportation Quantum Optical Memory DLCZ Entanglement Distribution Protocol Long-Distance Entanglement Distribution Quantum Optical Networks: Implementation and Applications Readership: Advanced undergraduates and junior graduates in Electrical Engineering, Chemical Engineering, Material Engineering and Physical Sciences."

Hydrogen Atom, The: Doorway to Quantum Physics, Its Symmetries and Radiative Shift (1版)

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【簡介】 This book provides a comprehensive exploration in the fundamental physics of the non-relativistic atom in terms of its symmetries. The book gives a complete treatment of the dynamical symmetries of the H atom and the use of these symmetries to determine energy levels and analytically calculate the first order radiative Lamb shift using group theory. Understanding radiative shifts is critical since measurement of the Lamb shift led to the development of quantum electrodynamics. The harmony between the mathematics and the physics is emphasised throughout the book. Through the lens of symmetry, it is possible to elucidate key features of the H atom is a way that is elegant, simple, and focuses on fundamentals.Understanding the hydrogen atom has been the gateway to the development of quantum physics for over 100 years. Both quantum mechanics and quantum electrodynamics were discovered by exploring the spectra of the H atom. This book outlines the key mathematical and physical behavior of the H atom, and its historical context, that led to these discoveries. The quantum behavior is related to the corresponding classical behavior and to the harmonic oscillator, the other fundamental central force system. Understanding the H atom, the most basic physical system, is a gateway to understanding much of quantum theory.

Selected Topics in Quantum Field Theory (1版)

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【簡介】 The book is based on a one-semester lecture course that the author taught at Charles University for more than ten years, as a follow-up to an introductory basic course. Its contents corresponds to an intermediate level of quantum field theory, and includes topics like regularization and renormalization methods, Cutkosky rules for imaginary part of loop diagrams, infrared divergences in quantum electrodynamics, renormalization group techniques, basics of quantum chromodynamics including the connection between unitarity and ghosts, asymptotic freedom, ABJ axial anomaly and trace anomaly.This book is aimed at any reader who has mastered techniques for evaluation of Feynman diagrams in field theory models up to the one-loop level. The accent is on detailed explicit calculations of tree-level and one-loop Feynman diagrams in quantum electrodynamics and quantum chromodynamics. In particular, the chapters devoted to the ABJ anomaly cover both its ultraviolet and infrared aspects, and display computational details in an extent not quite common in other competing texts available in current literature.