arXiv:1112.4502quant-ph
Bilocal versus non-bilocal correlations in entanglement swapping experiments
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Abstract
Entanglement swapping is a process by which two initially independent quantum systems can become entangled and generate nonlocal correlations. To characterize such correlations, we compare them to those predicted by bilocal models, where systems that are initially independent are described by uncorrelated states. We extend in this paper the analysis of bilocal correlations initiated in [Phys. Rev. Lett. 104, 170401 (2010)]. In particular, we derive new Bell-type inequalities based on the bilocality assumption in different scenarios, we study their possible quantum violations, and analyze their resistance to experimental imperfections. The bilocality assumption, being stronger than Bell's standard local causality assumption, lowers the requirements for the demonstration of quantumness in entanglement swapping experiments.
The article seems particularly hermetic, especially wrt "bilocal causality" which doesn't seem to occur as a phrase before Dec 2016[1]. The piece tells us "bilocal causality" is > a concept that is related to the more standard local causality, except that it accounts for the…
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