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La première révolution quantique qui naît notamment sous l’impulsion d’Einstein au début du XXe siècle, bouleverse notre vision du monde, fait émerger des concepts surprenants comme la dualité onde-particule, et conduit à des inventions majeures : le transistor, le laser, les circuits intégrés des ordinateurs.Moins connu est le développement d’une deuxième révolution quantique initiée en 1935 par le débat entre Albert Einstein et Niels Bohr, et rendue possible à partir de la fin des années 1960 par l’expérimentation sur des particules individuelles. Cette révolution, qui se déroule encore sous nos yeux, repose sur la notion étrange de particules intriquées qui se comportent de manière extraordinairement similaire même lorsqu’elles sont éloignées. Cette notion a été vérifiée en particulier dans les expériences d’Alain Aspect au début des années 1980 et connaît déjà des applications concrètes, notamment en matière de cryptographie. Elle pourrait déboucher à terme sur des technologies nouvelles comme l’informatique quantique.Tourné vers une physique d’avenir, cet ouvrage raconte une magnifique histoire de science, dans laquelle l’expérimentation a permis de trancher des débats philosophiques.

Théorie quantique --- Histoire --- mécanique quantique --- Quantum theory --- Wave-particle duality. --- Physics --- History. --- Einstein, Albert,

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Quantum physics, which offers an explanation of the world on the smallest scale, has fundamental implications that pose a serious challenge to ordinary logic. Particularly counterintuitive is the notion of entanglement, which has been explored for the past 30 years and posits an ubiquitous randomness capable of manifesting itself simultaneously in more than one place. This amazing 'non-locality' is more than just an abstract curiosity or paradox: it has entirely down-to-earth applications in cryptography, serving for example to protect financial information; it also has enabled the demonstration of 'quantum teleportation', whose infinite possibilities even science-fiction writers can scarcely imagine. This delightful and concise exposition does not avoid the deep logical difficulties of quantum physics, but gives the reader the insights needed to appreciate them . From 'Bell's Theorem' to experiments in quantum entanglement, the reader will gain a solid understanding of one of the most fascinating areas of contemporary physics.

Quantum theory. --- Quantum dynamics --- Quantum mechanics --- Quantum physics --- Physics --- Mechanics --- Thermodynamics --- Data structures (Computer scienc. --- Quantum Physics. --- History and Philosophical Foundations of Physics. --- Quantum Information Technology, Spintronics. --- Data Structures and Information Theory. --- Quantum physics. --- Physics. --- Quantum computers. --- Spintronics. --- Data structures (Computer science). --- Computers --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics --- Information structures (Computer science) --- Structures, Data (Computer science) --- Structures, Information (Computer science) --- Electronic data processing --- File organization (Computer science) --- Abstract data types (Computer science) --- Fluxtronics --- Magnetoelectronics --- Spin electronics --- Spinelectronics --- Microelectronics --- Nanotechnology --- Quàntums, Teoria dels --- Ordinadors quàntics --- Espintrònica --- Data structures (Computer science)

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Quantum entanglement --- Quantum theory --- Experiments

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Covering a number of important subjects in quantum optics, this textbook is an excellent introduction for advanced undergraduate and beginning graduate students, familiarizing readers with the basic concepts and formalism as well as the most recent advances. The first part of the textbook covers the semi-classical approach where matter is quantized, but light is not. It describes significant phenomena in quantum optics, including the principles of lasers. The second part is devoted to the full quantum description of light and its interaction with matter, covering topics such as spontaneous emission, and classical and non-classical states of light. An overview of photon entanglement and applications to quantum information is also given. In the third part, non-linear optics and laser cooling of atoms are presented, where using both approaches allows for a comprehensive description. Each chapter describes basic concepts in detail, and more specific concepts and phenomena are presented in 'complements'.

Optics. Quantum optics --- Quantum optics --- Quantum optics. --- Optique quantique --- Optique quantique. --- Optics --- Photons --- Quantum theory