Results 1 to 10 of about 505 (232)

Formalization of Bohr’s Contextuality Within the Theory of Open Quantum Systems [PDF]

open access: yesJournal of Russian Laser Research, 2021
In quantum physics, the notion of contextuality has a variety of interpretations which are typically associated with the names of their inventors, say Bohr, Bell, Kochen and Specker, and recently Dzhafarov. In fact, Bohr was the first who pointed to contextuality of quantum measurements as a part of formulation of his principle of complementarity ...
Andrei Khrennikov
exaly   +3 more sources

Violation of Leggett–Garg Inequality in Perceiving Cup-like Objects and Cognitive Contextuality [PDF]

open access: yesEntropy
This paper is devoted to an experimental investigation of cognitive contextuality inspired by quantum contextuality research. This contextuality is related to, but not identical to context-sensitivity which is well-studied in cognitive psychology and ...
Likan Zhan   +2 more
doaj   +2 more sources

Are Human Judgments of Real and Fake Faces Quantum-like Contextual? [PDF]

open access: yesEntropy
This paper describes a crowdsourced experiment in which participants were asked to judge which of two simultaneously presented facial images (one real, one AI-generated) was fake.
Peter Bruza, Aaron Lee, Pamela Hoyte
doaj   +2 more sources

Theory-independent monitoring of the decoherence of a superconducting qubit with generalized contextuality [PDF]

open access: yesNature Communications
Characterizing the nonclassicality of quantum systems under minimal assumptions is an important challenge for quantum foundations and technology. Here we introduce a theory-independent method of process tomography and perform it on a superconducting ...
Albert Aloy   +4 more
doaj   +2 more sources

Quantum theory allows for absolute maximal contextuality [PDF]

open access: yesPhysical Review A, 2015
REVTeX4, 6 pages, 1 ...
Barbara Amaral   +2 more
exaly   +3 more sources

Contextual measurement model and quantum theory. [PDF]

open access: yesR Soc Open Sci
We develop a contextual measurement model (CMM) that is used for the clarification of the quantum foundations. This model matches Bohr’s views on the role of experimental contexts. CMM is based on a contextual probability theory that is connected with generalized probability theory.
Khrennikov A.
europepmc   +7 more sources

Quantum Contextual Hypergraphs, Operators, Inequalities, and Applications in Higher Dimensions [PDF]

open access: yesEntropy
Quantum contextuality plays a significant role in supporting quantum computation and quantum information theory. The key tools for this are the Kochen–Specker and non-Kochen–Specker contextual sets.
Mladen Pavičić
doaj   +2 more sources

Experimental demonstration of the connection between quantum contextuality and graph theory [PDF]

open access: yesPhysical Review A, 2016
We report a method that exploits a connection between quantum contextuality and graph theory to reveal any form of quantum contextuality in high-precision experiments. We use this technique to identify a graph which corresponds to an extreme form of quantum contextuality unnoticed before and test it using high-dimensional quantum states encoded in the ...
Gustavo Canas   +2 more
exaly   +5 more sources

On Quantum Relations [PDF]

open access: yesEntropy
This contribution proposes a conceptual framework for quantum relations understood as operator-based, scale-dependent semantic structures. It explores the “fractaquantum” hypothesis, emphasizing that nature exhibits quantum properties at all scales, from
François Dubois, Zeno Toffano
doaj   +2 more sources

Generalized Bell Scenarios: Disturbing Consequences on Local-Hidden-Variable Models [PDF]

open access: yesEntropy, 2023
Bell nonlocality and Kochen–Specker contextuality are among the main topics in the foundations of quantum theory. Both of them are related to stronger-than-classical correlations, with the former usually referring to spatially separated systems, while ...
André Mazzari   +5 more
doaj   +2 more sources

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