Results 41 to 50 of about 505 (232)

Contextuality, coherences, and quantum Cheshire cats

New Journal of Physics, 2023
We analyse the quantum Cheshire cat using contextuality theory, to see if this can tell us anything about how best to interpret this paradox. We show that this scenario can be analysed using the relation between three different measurements, which seem ...
Jonte R Hance, Ming Ji, Holger F Hofmann
doaj   +1 more source

Limited preparation contextuality in quantum theory and its relation to the Cirel'son bound [PDF]

Physical Review A, 2015
Kochen-Specker (KS) theorem lies at the heart of the foundations of quantum mechanics. It establishes impossibility of explaining predictions of quantum theory by any noncontextual ontological model. Spekkens generalized the notion of KS contextuality in [Phys. Rev.
Manik Banik, Some Sankar Bhattacharya, Amit Mukherjee, Arup Roy, Andris Ambainis, Ashutosh Rai   +5 more
openaire   +3 more sources

Classical Causal Models for Bell and Kochen-Specker Inequality Violations Require Fine-Tuning

Physical Review X, 2018
Nonlocality and contextuality are at the root of conceptual puzzles in quantum mechanics, and they are key resources for quantum advantage in information-processing tasks.
Eric G. Cavalcanti
doaj   +1 more source

Testing Quantum Theory by Generalizing Noncontextuality

Physical Review X, 2023
It is a fundamental prediction of quantum theory that states of physical systems are described by complex vectors or density operators on a Hilbert space.
Markus P. Müller, Andrew J. P. Garner
doaj   +1 more source

Interface‐Engineered Binary Framework Composites: Advancing Porous Materials for Precision Medicine

Advanced Materials Interfaces, EarlyView.
Binary framework composites integrate two complementary porous architectures into a unified platform, enabling multifunctional design, enhanced structural tunability, and improved physicochemical performance. By combining high surface area, ordered porosity, interfacial synergy, and versatile functionalization, these hybrid materials offer new ...
Navid Rabiee, Mohammad Rabiee, Mohammad Akrami‐Hasan‐Kohal, Sidi A. Bencherif   +3 more
wiley   +1 more source

Contextuality under weak assumptions

New Journal of Physics, 2017
The presence of contextuality in quantum theory was first highlighted by Bell, Kochen and Specker, who discovered that for quantum systems of three or more dimensions, measurements could not be viewed as deterministically revealing pre-existing ...
Andrew W Simmons, Joel J Wallman, Hakop Pashayan, Stephen D Bartlett, Terry Rudolph   +4 more
doaj   +1 more source

Quantum Theory and Application of Contextual Optimal Transport

CoRR
Optimal Transport (OT) has fueled machine learning (ML) across many domains. When paired data measurements $(\boldsymbolμ, \boldsymbolν)$ are coupled to covariates, a challenging conditional distribution learning setting arises. Existing approaches for learning a $\textit{global}$ transport map parameterized through a potentially unseen context utilize
Nicola Mariella, Albert Akhriev, Francesco Tacchino, Christa Zoufal, Juan Carlos Gonzalez-Espitia, Benedek Harsanyi, Eugene Koskin, Ivano Tavernelli, Stefan Woerner, Marianna Rapsomaniki, Sergiy Zhuk, Jannis Born   +11 more
openaire   +3 more sources

Self‐Powered Visible‐Blind Graphene/NiO/ZnO UV‐C Photodiodes

Advanced Optical Materials, EarlyView.
“A scalable architecture for self‐powered UV‐C photodiodes integrates defect‐engineered p‐NiO/n‐ZnO heterojunctions with highly UV‐C transparent graphene anodes. The type‐II band alignment combined with the built‐in electrical field enables robust zero‐bias charge separation.
Umut Kaya, Leon Lörcher, Yasaman Jarrahizadeh, Axel Lorke, Wolfgang Mertin, Gerd Bacher   +5 more
wiley   +1 more source

A Perspective on Interactive Theorem Provers in Physics

Advanced Science, EarlyView.
Into an interactive theorem provers (ITPs), one can write mathematical definitions, theorems and proofs, and the correctness of those results is automatically checked. This perspective goes over the best usage of ITPs within physics and motivates the open‐source community run project PhysLean, the aim of which is to be a library for digitalized physics
Joseph Tooby‐Smith
wiley   +1 more source

Quantum contextuality as a topological property, and the ontology of potentiality

Zagadnienia Filozoficzne w Nauce, 2020
Quantum contextuality and its ontological meaning are very controversial issues, and they relate to other problems concerning the foundations of quantum theory.
Marek Woszczek
doaj