Results 71 to 80 of about 9,815 (180)

Bell's Inequalities and Density Matrices: Revealing “Hidden” Nonlocality [PDF]

Physical Review Letters, 1995
As is well known, quantum mechanical behavior cannot, in general, be simulated by a local hidden variables model. Most -if not all- the proofs of this incompatibility refer to the correlations which arise when each of two (or more) systems separated in space is subjected to a single ideal measurement.
openaire   +3 more sources

Hierarchical relationship of nonlocal correlations in Schwarzschild-de Sitter spacetime

European Physical Journal C: Particles and Fields
We investigate the hierarchy of nonlocal correlations for Dirac fields in the Schwarzschild de Sitter (SdS) spacetime. We find that the hierarchical relationship between the nonlocal advantage of quantum coherence (NAQC) and Bell nonlocality remains in ...
Huimin Yao, Li Zhang, Cuihong Wen, Jieci Wang   +3 more
doaj   +1 more source

Nonlocal correlations dynamics of two-qubit Heisenberg XYZ states with influence of intrinsic decoherence and y-component of Dzyaloshinskii-Moriya interaction

Alexandria Engineering Journal
In this paper, we explore nonlocal correlation and Bell non-locality in a two-qubit Heisenberg XYZ model by using Bell-CHSH inequality and uncertainty induced nonlocality (UIN) as well as log-negativity.
Nuha Al-Harbi, Abdel-Haleem Abdel-Aty, A.-B.A. Mohamed, Hichem Eleuch   +3 more
doaj   +1 more source

Bell correlations at finite temperature [PDF]

Quantum, 2018
We show that spin systems with infinite-range interactions can violate at thermal equilibrium a multipartite Bell inequality, up to a finite critical temperature $T_c$.
Matteo Fadel, Jordi Tura
doaj   +1 more source

Making Sense of Bell’s Theorem and Quantum Nonlocality [PDF]

Foundations of Physics, 2017
18 pages, 1 ...
openaire   +2 more sources

Gravitationally modulated quantum correlations: Discriminating classical and quantum models of ultra-compact objects with Bell nonlocality

Physics Letters B
We investigate the relation between quantum nonlocality and gravity at the astrophysical scale, both in the classical and quantum regimes. Considering a gedanken experiment involving particle pairs orbiting in the strong gravitational field of ultra ...
Luciano Petruzziello, Fabrizio Illuminati   +1 more
doaj   +1 more source

Bell nonlocality using tensor networks and sparse recovery

Physical Review Research, 2020
Bell's theorem, stating that quantum predictions are incompatible with a local hidden variable description, is a cornerstone of quantum theory and at the center of many quantum information processing protocols.
I. S. Eliëns, S. G. A. Brito, R. Chaves
doaj   +1 more source

Bipartite Bell inequalities for hyperentangled states

, 2006
We show that bipartite Bell inequalities based on the Einstein-Podolsky-Rosen criterion for elements of reality and derived from the properties of some hyperentangled states allow feasible experimental verifications of the fact that quantum nonlocality ...
Adán Cabello, D. M. Greenberger, J. S. Bell, M. Barbieri, M. L. G. Redhead, N. D. Mermin   +5 more
core   +1 more source

Multipartite Bell Nonlocality

, 2019
Abstract This chapter discusses nonlocality for scenarios with more than two players. The definition of locality is the obvious generalisation of the bipartite case, but now there are many more ways in which locality can be violated. First, the main families of inequalities are presented. Then, the definition and demonstration of genuine
openaire   +1 more source

Entanglement and Bell nonlocality in τ + τ − at the BEPC

Journal of High Energy Physics
Quantum entanglement and Bell nonlocality are two phenomena that occur only in quantum systems. In both cases, these are correlations between two subsystems that are classically absent.
Tao Han, Matthew Low, Youle Su
doaj   +1 more source