4.7 Review

Bell nonlocality in networks

期刊

REPORTS ON PROGRESS IN PHYSICS
卷 85, 期 5, 页码 -

出版社

IOP Publishing Ltd
DOI: 10.1088/1361-6633/ac41bb

关键词

Bell nonlocality; quantum networks; device-independent quantum information; entanglement; quantum correlations

资金

  1. Swiss National Science Foundation
  2. Wenner-Gren Foundations
  3. European Union [648913]
  4. Spanish Ministry of Science and Innovation through the 'Severo Ochoa Programme for Centres of Excellence in RD' [CEX2019-000904-S]
  5. National Natural Science Foundation of China [61772437, 62172341]
  6. Southern University of Science and Technology [SIQSE202105]
  7. Swiss National Fund Early Mobility Grant - MCIN/AEI [P2GEP2_191444, PCI2021-122022-2B]
  8. European Union Next Generation EU/PRTR
  9. Government of Spain (FIS2020-TRANQI)
  10. Government of Spain ([MCIN/AEI]) [CEX2019-000910-S]
  11. Generalitat de Catalunya (CERCA) [AGAUR SGR 1381]
  12. Swiss National Science Foundation (SNF) [P2GEP2_191444] Funding Source: Swiss National Science Foundation (SNF)

向作者/读者索取更多资源

Bell's theorem has proven that quantum theory contradicts local physical models, stimulating research in the foundations of quantum theory and quantum information science. In network scenarios, nonlocal correlations give rise to phenomena that do not exist in traditional Bell experiments, presenting formidable conceptual and practical challenges.
Bell's theorem proves that quantum theory is inconsistent with local physical models. It has propelled research in the foundations of quantum theory and quantum information science. As a fundamental feature of quantum theory, it impacts predictions far beyond the traditional scenario of the Einstein-Podolsky-Rosen paradox. In the last decade, the investigation of nonlocality has moved beyond Bell's theorem to consider more sophisticated experiments that involve several independent sources which distribute shares of physical systems among many parties in a network. Network scenarios, and the nonlocal correlations that they give rise to, lead to phenomena that have no counterpart in traditional Bell experiments, thus presenting a formidable conceptual and practical challenge. This review discusses the main concepts, methods, results and future challenges in the emerging topic of Bell nonlocality in networks.

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