Results 21 to 30 of about 9,815 (180)
Entropy, 2021 This note is a part of my effort to rid quantum mechanics (QM) nonlocality. Quantum nonlocality is a two faced Janus: one face is a genuine quantum mechanical nonlocality (defined by the Lüders’ projection postulate).
Andrei Khrennikov
doaj +1 more source
Bell's theorem, accountability and nonlocality [PDF]
Journal of Physics A: Mathematical and Theoretical, 2014 Bell's theorem is a fundamental theorem in physics concerning the incompatibility between some correlations predicted by quantum theory and a large class of physical theories. In this paper, we introduce the hypothesis of accountability, which demands that it is possible to explain the correlations of the data collected in many runs of a Bell ...
Vona, Nicola, Liang, Yeong-Cherng
openaire +2 more sources
Exposure of subtle multipartite quantum nonlocality
npj Quantum Information, 2021 The celebrated Einstein–Podolsky–Rosen quantum steering has a complex structure in the multipartite scenario. We show that a naively defined criterion for multipartite steering allows, like in Bell nonlocality, for a contradictory effect whereby local ...
M. M. Taddei +5 more
doaj +1 more source
SciPost Physics Core, 2023 It has recently been shown that by broadcasting the subsystems of a bipartite quantum state, one can activate Bell nonlocality and significantly improve noise tolerance bounds for device-independent entanglement certification.
Emanuel-Cristian Boghiu, Flavien Hirsch, Pei-Sheng Lin, Marco Túlio Quintino, Joseph Bowles
doaj +1 more source
Recycling nonlocality in quantum star networks
Physical Review Research, 2023 The nonlocality of an entangled qubit pair can be recycled for several Bell experiments. Here, we go beyond standard Bell scenarios and investigate the recycling of nonlocal resources in a quantum network.
Ya-Li Mao +8 more
doaj +1 more source
Experimental device-independent verification of quantum steering [PDF]
, 2014 Bell nonlocality between distant quantum systems---i.e., joint correlations which violate a Bell inequality---can be verified without trusting the measurement devices used, nor those performing the measurements.
Bennet, Adam J. +4 more
core +2 more sources
Exploring Multipartite Steering Effect Using Bell Operators
Entropy, 2019 While Bell operators are exploited in detecting Bell nonlocality and entanglement classification, we demonstrate their usefulness in exploring Einstein−Podolsky−Rosen (EPR) steering, which represents the quantum correlation intermediate ...
Li-Yi Hsu, Shoichi Kawamoto
doaj +1 more source
Bell inequalities for nonlocality depth
Physical Review A, 2023 When three or more particles are considered, quantum correlations can be stronger than the correlations generated by so-called hybrid local hidden variable models, where some of the particles are considered as a single block inside which communication and signaling is allowed. We provide an exhaustive classification of Bell inequalities to characterize
Fabian Bernards, Otfried Gühne
openaire +2 more sources
Classical causal models cannot faithfully explain Bell nonlocality or Kochen-Specker contextuality in arbitrary scenarios [PDF]
Quantum, 2021 In a recent work, it was shown by one of us (EGC) that Bell-Kochen-Specker inequality violations in phenomena satisfying the no-disturbance condition (a generalisation of the no-signalling condition) cannot in general be explained with a faithful ...
J. C. Pearl, E. G. Cavalcanti
doaj +1 more source
Bell's Nonlocality Can be Detected by the Violation of Einstein-Podolsky-Rosen Steering Inequality [PDF]
, 2016 Recently quantum nonlocality has been classified into three distinct types: quantum entanglement, Einstein-Podolsky-Rosen steering, and Bell's nonlocality. Among which, Bell's nonlocality is the strongest type.
Chen, Changbo +4 more
core +2 more sources