Results 51 to 60 of about 1,575 (276)
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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Contextual Subspace Variational Quantum Eigensolver [PDF]
Quantum, 2021 We describe the contextual subspace variational quantum eigensolver (CS-VQE), a hybrid quantum-classical algorithm for approximating the ground state energy of a Hamiltonian. The approximation to the ground state energy is obtained as the sum of two contributions.
William M. Kirby +2 more
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Using Quantum Cheshire Cats to explore Contextuality and Quantum Coherence [PDF]
We analyse the quantum Cheshire cat using contextuality theory. The results shed a surprising new light on the relation between quantum paradoxes, weak values, and contextuality, a key resource for quantum computing.© 2024 The Author ...
Hofmann, Holger F +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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An Order-Theoretic Quantification of Contextuality
Information, 2014 In this essay, I develop order-theoretic notions of determinism and contextuality on domains and topoi. In the process, I develop a method for quantifying contextuality and show that the order-theoretic sense of contextuality is analogous to the sense ...
Ian T. Durham
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Topological Contextuality and Quantum Representations
International Journal of TopologyThis paper investigates quantum contextuality, a central nonclassical aspect of quantum mechanics, by employing the algebraic and topological structures of modular tensor categories.
Tzu-Miao Chou
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Contextuality and Indistinguishability
Entropy, 2017 It is well known that in quantum mechanics we cannot always define consistently properties that are context independent. Many approaches exist to describe contextual properties, such as Contextuality by Default (CbD), sheaf theory, topos theory, and non ...
José Acacio de Barros +2 more
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Hierarchies of resources for measurement-based quantum computation
New Journal of Physics, 2023 For certain restricted computational tasks, quantum mechanics provides a provable advantage over any possible classical implementation. Several of these results have been proven using the framework of measurement-based quantum computation (MBQC), where ...
Markus Frembs +3 more
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State independent contextuality advances one-way communication
New Journal of Physics, 2019 Although ‘quantum contextuality’ is one of the most fundamental non-classical feature, its generic role in information processing and computation is an open quest.
Debashis Saha +2 more
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New Journal of Physics, 2023 Quantum contextuality is one of the most recognized resources in quantum communication and computing scenarios. We provide a new quantifier of this resource, the rank of contextuality (RC).
Karol Horodecki +8 more
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