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Coherent atomic matter waves pp 615–660Cite as

Cavity QED Experiments, Entanglement and Quantum Measurement

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Part of the book series: Les Houches - Ecole d’Ete de Physique Theorique ((LHSUMMER,volume 72))

Abstract

The theory of measurement is one of the most important part of quantum mechanics. It introduces at a fundamental level an intrinsic randomness in single measurement results. This randomness becomes even stranger when considering composite quantum systems. The correct description of statistical results of joined measurements performed on two parts of the system then involves a purely quantum feature named entanglement. It originates from the impossibility to factorize a composite system’s wavefunction as a direct product of two individual wavefunctions (non-separability) once the two parts of the system have interacted. It manifests itself in non-local correlations while observing the two parts of the system after separation by a macroscopic distance. Entanglement makes it impossible to interpret these correlations in the light of classical logic.

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  1. Département de Physique de L’Ecole Normale Supérieure, Laboratoire Kastler Brossel, 24 rue Lhomond, 75231, Paris Cedex 5, France

    M. Brune

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R. Kaiser C. Westbrook F. David

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Brune, M. (2001). Cavity QED Experiments, Entanglement and Quantum Measurement. In: Kaiser, R., Westbrook, C., David, F. (eds) Coherent atomic matter waves. Les Houches - Ecole d’Ete de Physique Theorique, vol 72. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45338-5_9

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