Results 11 to 20 of about 609 (135)
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
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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
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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
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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
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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
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Exploring Bell nonlocality of quantum networks with stabilizing and logical operators
Physical Review Research, 2021 In practical quantum networks, a variety of multiqubit stabilized states emitted from independent sources are distributed among the agents, and the correlations across the entire network can be derived from each agent's local measurements on the shared ...
Li-Yi Hsu, Ching-Hsu Chen
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Entanglement without hidden nonlocality
New Journal of Physics, 2016 We consider Bell tests in which the distant observers can perform local filtering before testing a Bell inequality. Notably, in this setup, certain entangled states admitting a local hidden variable model in the standard Bell scenario can nevertheless ...
Flavien Hirsch +4 more
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Towards an equivalence between maximal entanglement and maximal quantum nonlocality
New Journal of Physics, 2018 While all bipartite pure entangled states are known to generate correlations violating a Bell inequality, and are therefore nonlocal, the quantitative relation between pure state entanglement and nonlocality is poorly understood.
Victoria Lipinska +3 more
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Two Faced Janus of Quantum Nonlocality
Entropy, 2020 This paper is a new step towards understanding why “quantum nonlocality” is a misleading concept. Metaphorically speaking, “quantum nonlocality” is Janus faced. One face is an apparent nonlocality of the Lüders projection and
Andrei Khrennikov
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Deterministic all-versus-nothing proofs of Bell nonlocality based on non-stabilizer states
New Journal of Physics, 2023 The all-versus-nothing proof of Bell nonlocality is a prominent demonstration of Bell’s theorem without inequalities. There are two kinds of such proofs: the deterministic all-versus-nothing proof and the probabilistic all-versus-nothing proof, which ...
Weidong Tang
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