Entanglement, Information, and the Interpretation of Quantum by Gregg Jaeger

By Gregg Jaeger

This e-book explores the character of quantum entanglement and quantum info and their function within the quantum international. Their family members to a couple of key experiments and idea experiments within the heritage of quantum physics are thought of, as is a number of interpretations of quantum mechanics which were recommend as a method of figuring out the elemental nature of microphysics - the commonly accredited area of quantum mechanics - and in certain cases, the universe as a complete. during this manner, the ebook finds the deep importance of entanglement and quantum details for our knowing of the actual global.

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Extra resources for Entanglement, Information, and the Interpretation of Quantum Mechanics (The Frontiers Collection)

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A completed state, containing information not present in the quantum state, would then provide a straightforward explanation of the perfect correlations predicted by quantum mechanics, which it does not obviously explain. Bell’s theorem, discussed below, later showed that such an approach is destined to failure, because the empirically verifiable predictions of quantum mechanics for pairs of two-level systems contradict the collection of assumptions of EPR. 7 Problems with Hidden-Variables Models In the course of his rigorous mathematical formulation of quantum mechanics, John von Neumann addressed the question of a hidden-variables alternative to the approach to quantum mechanics that Dirac and others had been considering.

Indeed, the implementation of the final apparatus configuration can be delayed until after the system under measurement has entered the apparatus [492]. An interference-free detection pattern should result even if both slits are left available to incoming particles and one also detects particles after the two slits and this is so before the two alternatives (of having passed through slit 1 or slit 2) have become distinguishable from each other in any given run of the apparatus—say if substantially less than one particle is present in the apparatus during a configuration switching-time interval.

164) 31 Cf. 7. 34 1 Superposition, Entanglement, and Limits of Local Causality This can be seen as Einstein’s formulation of what later came to be known in the physics literature, albeit somewhat misleadingly from the philosophical point of view, as local realism because the EPR article stressed the importance of locality as an essential characteristic of objective physical objects. Before the EPR paper, Einstein had presented a less compelling thought experiment directed toward this question, which was a simple situation not involving entangled states, in which the wave-function of a ball is restricted to two boxes, B1 and B2 , which can be arbitrarily well separated in space [256].

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