Device-independent certification of multipartite entanglement using measurements performed in randomly chosen triads

Yang, Shih-Xian; Tabia, Gelo Noel; Lin, Pei Sheng; Liang, Yeong-Cherng

doi:10.1103/physreva.102.022419

Cited by 8 publications

(2 citation statements)

References 57 publications

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“…In this case, the only context information required being the number of parties, the number of measurements per party and the number of outcomes per measurement [15]. Note a recent theoretical work in the multipartite scenario which investigates Bellnonlocal correlations using linear programming and specific Bell inequalities as well by having the parties performing their measurements in a randomly chosen triad instead of randomly chosen bases [22].…”

Section: Introductionmentioning

confidence: 99%

Experimentally friendly approach towards nonlocal correlations in multisetting N-partite Bell scenarios

Barasiński

Cernoch

Laskowski

et al. 2021

Quantum

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In this work, we study a recently proposed operational measure of nonlocality by Fonseca and Parisio [Phys. Rev. A 92, 030101(R) (2015)] which describes the probability of violation of local realism under randomly sampled observables, and the strength of such violation as described by resistance to white noise admixture. While our knowledge concerning these quantities is well established from a theoretical point of view, the experimental counterpart is a considerably harder task and very little has been done in this field. It is caused by the lack of complete knowledge about the facets of the local polytope required for the analysis. In this paper, we propose a simple procedure towards experimentally determining both quantities for N-qubit pure states, based on the incomplete set of tight Bell inequalities. We show that the imprecision arising from this approach is of similar magnitude as the potential measurement errors. We also show that even with both a randomly chosen N-qubit pure state and randomly chosen measurement bases, a violation of local realism can be detected experimentally almost 100% of the time. Among other applications, our work provides a feasible alternative for the witnessing of genuine multipartite entanglement without aligned reference frames.

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Section: Introductionmentioning

confidence: 99%

Experimentally friendly approach towards nonlocal correlations in multisetting N-partite Bell scenarios

Barasiński

Cernoch

Laskowski

et al. 2021

Quantum

View full text Add to dashboard Cite

show abstract

“…In particular, we focus on quantum entanglement which is undoubtedly an essence of many quantum information procedures [25][26][27]. Therefore, it is necessary to be able to test the presence of entanglement and, for reason explained above, it is practical to manage it in RFI mode [28][29][30][31][32]. Over time several methods for entanglement detection under these constraints have been proposed.…”

Section: Introductionmentioning

confidence: 99%