Results 31 to 40 of about 663 (243)
Popper, Bohr et la contextualité de la mécanique quantique
Philosophia Scientiæ, 2021 During his intellectual life, Karl Popper blamed Niels Bohr for defending subjectivist theses about Quantum Mechanics and for introducing the concept of subject in physics. But Popper’s accusation contradicts Bohr’s texts.
Sébastien Poinat
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Causation does not explain contextuality [PDF]
Quantum, 2018 Realist interpretations of quantum mechanics presuppose the existence of elements of reality that are independent of the actions used to reveal them. Such a view is challenged by several no-go theorems that show quantum correlations cannot be explained ...
Sally Shrapnel, Fabio Costa
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Entropic Test of Quantum Contextuality [PDF]
Physical Review Letters, 2012 We study the contextuality of a three-level quantum system using classical conditional entropy of measurement outcomes. First, we analytically construct the minimal configuration of measurements required to reveal contextuality. Next, an entropic contextual inequality is formulated, analogous to the entropic Bell inequalities derived by Braunstein and ...
Kurzyński, P. +2 more
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CONTEXTUAL DETERMINISTIC QUANTUM MECHANICS [PDF]
International Journal of Modern Physics B, 2000 We present a simple proof of quantum contextuality for a spinless particle with a one-dimensional configuration space. We then discuss how the maximally realistic deterministic quantum mechanics recently constructed by this author and V. Singh can be applied to different contexts.
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Contextuality in infinite one-dimensional translation-invariant local Hamiltonians
npj Quantum Information, 2022 In recent years there has been a growing interest in treating many-body systems as Bell scenarios, where lattice sites play the role of distant parties and only near-neighbor statistics are accessible. We investigate contextuality arising from three Bell
Kaiyan Yang +6 more
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Separability, Contextuality, and the Quantum Frame Problem
International Journal of Theoretical Physics, 2023 We study the relationship between assumptions of state separability and both preparation and measurement contextuality, and the relationship of both of these to the frame problem, the problem of predicting what does not change in consequence of an action. We state a quantum analog of the latter and prove its undecidability. We show how contextuality is
Chris Fields, James F. Glazebrook
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Measurement contextuality and Planck’s constant
New Journal of Physics, 2018 Contextuality is a necessary resource for universal quantum computation and non-contextual quantum mechanics can be simulated efficiently by classical computers in many cases. Orders of Planck’s constant, ℏ, can also be used to characterize the classical-
Lucas Kocia, Peter Love
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Measuring Observable Quantum Contextuality [PDF]
, 2016 Contextuality is a central property in comparative analysis of classical, quantum, and supercorrelated systems. We examine and compare two well-motivated approaches to contextuality. One approach ("contextuality-by-default") is based on the idea that one and the same physical property measured under different conditions (contexts) is represented by ...
José Acácio de Barros +3 more
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Non-Classical Correlations in n-Cycle Setting
Entropy, 2019 Quantum communication and quantum computation form the two crucial facets of quantum information theory. While entanglement and its manifestation as Bell non-locality have been proved to be vital for communication tasks, contextuality (a generalisation ...
Kishor Bharti +2 more
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Uniqueness of all fundamental noncontextuality inequalities
Physical Review Research, 2020 Contextuality is one way of capturing the nonclassicality of quantum theory. The contextual nature of a theory is often witnessed via the violation of noncontextuality inequalities—certain linear inequalities involving probabilities of measurement events.
Kishor Bharti +3 more
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