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Characterising and bounding the set of quantum behaviours in contextuality scenarios [PDF]

open access: yesQuantum, 2021
The predictions of quantum theory resist generalised noncontextual explanations. In addition to the foundational relevance of this fact, the particular extent to which quantum theory violates noncontextuality limits available quantum advantage in ...
Anubhav Chaturvedi   +2 more
doaj   +2 more sources

Quantum contextuality, causality and freedom of choice [PDF]

open access: yesPhilosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences
The theme of this issue is ‘Quantum contextuality, causality and freedom of choice.’ Contextuality, including non-locality as its special case, has long since becomeone of the central topics in foundations of quantum mechanics, also making inroads in ...
Samson Abramsky   +2 more
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

Contextual quantum metrology

open access: yesnpj Quantum Information
We demonstrate that the contextuality of measurement selection can enhance the precision of quantum metrology with a simple linear optical experiment. Contextuality is a nonclassical property known as a resource for various quantum information processing
Jeongwoo Jae   +4 more
doaj   +4 more sources

Engineering and Applying Quantum Contextuality [PDF]

open access: yesEntropy
The endeavor to refute hidden variable theories underlying quantum theory has yielded the discipline of contextual sets. A plethora of various kinds of sets of arbitrary structure in any dimension have been developed, alongside extensive experimental ...
Mladen Pavičić
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

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

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

Contextuality-based quantum conferencing [PDF]

open access: yesQuantum Information Processing, 2021
27 Pages, 12 ...
Rajni Bala   +2 more
openaire   +3 more sources

Sum-of-squares decompositions for a family of noncontextuality inequalities and self-testing of quantum devices [PDF]

open access: yesQuantum, 2020
Violation of a noncontextuality inequality or the phenomenon referred to `quantum contextuality' is a fundamental feature of quantum theory. In this article, we derive a novel family of noncontextuality inequalities along with their sum-of-squares ...
Debashis Saha   +2 more
doaj   +1 more source

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