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Quantum Engineering Grenoble Seminar || Quantum Foundations - Hippolyte Dourdent

on the December 19, 2019

at 10:30.
Contextuality is certainly one of the most fundamental aspects of quantum weirdness. In fact, it is usually said that “in quantum mechanics, the result of a measurement depends on the experimental context”. This statement - often vaguely attributed to Bohr- finds a concrete foundation in a theorem established by Ernst Specker and Simon Kochen (1960-1967) and John Bell (1964-1966). This presentation aims at introducing their result and highlights why it is a key feature to understanding the core of what makes quantum mechanics “weird”.
In this first talk, I will introduce the Kochen-Specker theorem through its historical and philosophical contexts : if Kochen and Bell were motivated by a debate on the completeness of quantum theory and the possibility to extend it with hidden variables, Specker’s original motive was essentially metaphysical, even theological.  I will present how my historical investigation led me to assume that the biblical narrative of Jonas might have been its main source of inspiration. I will then give simple proofs of the theorem based on "coloring". Finally, I will give a taste of how quantum contextuality can be compared to famous paradoxes in classical logics. The philosophical consequences of this last point will be developed in a second talk, to be given early next year.
 
(The talk is aimed at a large audience; basic knowledge in quantum theory will be sufficient to follow it.)

Come along and feel free to forward this information.
If you need an authorisation to enter the CNRS campus, please contact Cyril Branciard (cyril.branciard@neel.cnrs.fr).
 
Published on January 20, 2020

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In room K-223 of the Institut Néel.