Results 1 to 10 of about 663 (243)

Quantum Contextuality and Indeterminacy [PDF]

Entropy, 2020
The circumstances of measurement have more direct significance in quantum than in classical physics, where they can be neglected for well-performed measurements.
Gregg Jaeger
doaj   +8 more sources

Chromatic Quantum Contextuality [PDF]

Entropy
Chromatic quantum contextuality is a criterion of quantum nonclassicality based on (hyper)graph coloring constraints. If a quantum hypergraph requires more colors than the number of outcomes per maximal observable (context), it lacks a classical ...
Karl Svozil
doaj   +5 more sources

Quantum Contextuality with Stabilizer States [PDF]

Entropy, 2013
The Pauli groups are ubiquitous in quantum information theory because of their usefulness in describing quantum states and operations and their readily understood symmetry properties.
Jiri Vala, Eoin Brennan, Mark Howard
doaj   +6 more sources

Quantum Contextuality [PDF]

Quantum, 2023
Quantum contextual sets have been recognized as resources for universal quantum computation, quantum steering and quantum communication. Therefore, we focus on engineering the sets that support those resources and on determining their structures and ...
Mladen Pavicic
doaj   +5 more sources

Statistical Signatures of Quantum Contextuality [PDF]

Entropy
Quantum contextuality describes situations where the statistics observed in different measurement contexts cannot be explained by a measurement of the independent reality of the system. The most simple case is observed in a three-dimensional Hilbert space, with five different measurement contexts related to each other by shared measurement outcomes ...
Holger F Hofmann, Hofmann Holger F
exaly   +6 more sources

Contextuality in Classical Physics and Its Impact on the Foundations of Quantum Mechanics

Entropy, 2021
It is shown that the hallmark quantum phenomenon of contextuality is present in classical statistical mechanics (CSM). It is first shown that the occurrence of contextuality is equivalent to there being observables that can differentiate between pure and
Fritiof Wallentin
doaj   +3 more sources

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

Entropy
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, Andrei Khrennikov, Yingce Zhu   +2 more
doaj   +2 more sources

Engineering and Applying Quantum Contextuality [PDF]

Entropy
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]

Entropy
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]

Entropy
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