Detecting Nonbilocal Correlations via Parameterized Elegant Joint Measurement
Abstract
Quantum networks constitute a defining resource for quantum information processing; however, their nonclassical behavior is jointly governed by the choice of measurement basis and the independence of the distributed sources. We study a bilocal entanglement-swapping network in which the central node performs a three-parameter elegant joint measurement (EJM). For two independent Bell-state sources, we construct two binary edge observables and then derive a quantum prediction involving three parameters, which surpasses the classical constraints. In particular, the parameter θ controls both the degree of entanglement of the EJM basis states and the maximum value of the quantum prediction. These results provide an analytic and directly reproducible route for tuning nonbilocal correlations in an experimentally relevant two-source network.
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BibTeX
@misc{tian2026detecting,
title = {{Detecting Nonbilocal Correlations via Parameterized Elegant Joint Measurement}},
author = {Ye Tian and Ying-Qiu He and Zan-Jia Li and Yu-Yan Zhang and Dong Ding},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.07769},
eprint = {2611.07769},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.07769},
}
RIS
TY - UNPB
TI - Detecting Nonbilocal Correlations via Parameterized Elegant Joint Measurement
AU - Ye Tian
AU - Ying-Qiu He
AU - Zan-Jia Li
AU - Yu-Yan Zhang
AU - Dong Ding
PY - 2026
DA - 2026/11/05
PB - arXiv
DO - 10.48550/arxiv.2611.07769
UR - https://arxiv.org/abs/2611.07769
AB - Quantum networks constitute a defining resource for quantum information processing; however, their nonclassical behavior is jointly governed by the choice of measurement basis and the independence of the distributed sources. We study a bilocal entanglement-swapping network in which the central node performs a three-parameter elegant joint measurement (EJM). For two independent Bell-state sources, we construct two binary edge observables and then derive a quantum prediction involving three parameters, which surpasses the classical constraints. In particular, the parameter θ controls both the degree of entanglement of the EJM basis states and the maximum value of the quantum prediction. These results provide an analytic and directly reproducible route for tuning nonbilocal correlations in an experimentally relevant two-source network.
ER -