Results 61 to 70 of about 4,670 (139)

Entropic inequalities as a necessary and sufficient condition to noncontextuality and locality

, 2013
The assumption of local realism in a Bell locality scenario imposes non-trivial conditions on the Shannon entropies of the associated probability distributions, expressed by linear entropic Bell inequalities.
Chaves, Rafael
core   +1 more source

Experimental nonlocality-based randomness generation with non-projective measurements

, 2017
We report on an optical setup generating more than one bit of randomness from one entangled bit (i.e. a maximally entangled state of two-qubits). The amount of randomness is certified through the observation of Bell non-local correlations. To attain this
Acín, A., Cavalcanti, D., Farías, O. Jiménez, Gómez, E. S., Gómez, S., Lima, G., Mattar, A.   +6 more
core   +1 more source

Bell-type Inequalities for Arbitrary Non-Cyclic Networks

, 2016
Bell inequalities bound the strength of classical correlations between observers measuring on a shared physical system. However, studies of physical correlations can be considered beyond the standard Bell scenario by networks of observers sharing some ...
Tavakoli, Armin
core   +1 more source

Maximal violation of a broad class of Bell inequalities and its implication on self-testing

Physical Review Research, 2019
In quantum information, lifting is a systematic procedure that can be used to derive—when provided with a seed Bell inequality—other Bell inequalities applicable in more complicated Bell scenarios.
C. Jebarathinam, Jui-Chen Hung, Shin-Liang Chen, Yeong-Cherng Liang   +3 more
doaj   +1 more source

Entanglement-assisted quantum communication with simple measurements. [PDF]

Nat Commun, 2022
Piveteau A, Pauwels J, Håkansson E, Muhammad S, Bourennane M, Tavakoli A.   +5 more
europepmc   +1 more source

Quantum networks reveal quantum nonlocality

, 2010
The results of local measurements on some composite quantum systems cannot be reproduced classically. This impossibility, known as quantum nonlocality, represents a milestone in the foundations of quantum theory.
A Acín, A Acín, A Sen De, AA Methot, C-E Bardyn, D Collins, D Collins, D Svetlichny, H Buhrman, I Devetak, J Barrett, J Barrett, JF Clauser, JS Bell, L Masanes, M Forster, M Seevinck, ML Almeida, ML Almeida, N Brunner, RF Werner, RF Werner, S Pironio, S Popescu, S Popescu, T Vértesi, Y-C Liang   +26 more
core   +1 more source

Quantifying the intrinsic randomness in sequential measurements

New Journal of Physics
In the standard Bell scenario, when making a local projective measurement on each system component, the amount of randomness generated is restricted.
Xinjian Liu, Yukun Wang, Yunguang Han, Xia Wu   +3 more
doaj   +1 more source

Simple conditions constraining the set of quantum correlations

, 2015
The characterization of the set of quantum correlations in Bell scenarios is a problem of paramount importance for both the foundations of quantum mechanics and quantum information processing in the device-independent scenario.
de Vicente, Julio I.
core   +1 more source

An Extension of Combinatorial Contextuality for Cognitive Protocols. [PDF]

Front Psychol, 2022
Obeid AK, Bruza P, Moreira C, Bruns A, Angus D.   +4 more
europepmc   +1 more source

Distribution of Bell inequality violation vs. multiparty quantum correlation measures

, 2015
Violation of a Bell inequality guarantees the existence of quantum correlations in a quantum state. A pure bipartite quantum state, having nonvanishing quantum correlation, always violates a Bell inequality. Such correspondence is absent for multipartite
Das, Tamoghna, De, Aditi Sen, Sen, Ujjwal, Sharma, Kunal   +3 more
core   +1 more source