Results 31 to 40 of about 9,786 (198)

Experimental device-independent verification of quantum steering [PDF]

open access: yes, 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 Bell nonlocality of quantum networks with stabilizing and logical operators

open access: yesPhysical 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
doaj   +1 more source

Complementarity of genuine multipartite Bell nonlocality [PDF]

open access: yesPhysical Review A, 2017
We introduce a feature of no-signaling (Bell) nonlocal theories: namely, when a system of multiple parties manifests genuine nonlocal correlation, then there cannot be arbitrarily high nonlocal correlation among any subset of the parties. We call this feature complementarity of genuine multipartite nonlocality. We use Svetlichny's criterion for genuine
Sasha Sami   +2 more
  +4 more sources

Two Faced Janus of Quantum Nonlocality

open access: yesEntropy, 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
doaj   +1 more source

Translationally invariant multipartite Bell inequalities involving only two-body correlators

open access: yes, 2014
Bell inequalities are natural tools that allow one to certify the presence of nonlocality in quantum systems. The known constructions of multipartite Bell inequalities contain, however, correlation functions involving all observers, making their ...
Acín, A.   +5 more
core   +1 more source

Position-Momentum Bell-Nonlocality with Entangled Photon Pairs [PDF]

open access: yes, 2015
Witnessing continuous-variable Bell nonlocality is a challenging endeavor, but Bell himself showed how one might demonstrate this nonlocality. Though Bell nearly showed a violation using the CHSH inequality with sign-binned position-momentum statistics ...
Howell, John C.   +3 more
core   +3 more sources

Buonomano against Bell: Nonergodicity or nonlocality? [PDF]

open access: yesInternational Journal of Quantum Information, 2017
The aim of this note is to attract attention of the quantum foundational community to the fact that in Bell’s arguments, one cannot distinguish two hypotheses: (a) quantum mechanics is nonlocal, (b) quantum mechanics is nonergodic. Therefore, experimental violations of Bell’s inequality can be as well interpreted as supporting the hypothesis that ...
openaire   +2 more sources

Genuine hidden quantum nonlocality

open access: yes, 2013
The nonlocality of certain quantum states can be revealed by using local filters before performing a standard Bell test. This phenomenon, known as hidden nonlocality, has been so far demonstrated only for a restricted class of measurements, namely ...
Bowles, Joseph   +3 more
core   +2 more sources

Joint Measurability, Einstein-Podolsky-Rosen Steering, and Bell Nonlocality

open access: yes, 2014
We investigate the relation between the incompatibility of quantum measurements and quantum nonlocality. We show that any set of measurements that is not jointly measurable (i.e. incompatible) can be used for demonstrating EPR steering, a form of quantum
Brunner, Nicolas   +2 more
core   +2 more sources

Towards an equivalence between maximal entanglement and maximal quantum nonlocality

open access: yesNew 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
doaj   +1 more source

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