Bell nonlocality in networks

• URL: http://arxiv.org/abs/2104.10700v3
• Date: Tue, 5 Apr 2022 08:47:55 GMT
• Title: Bell nonlocality in networks
• Authors: Armin Tavakoli, Alejandro Pozas-Kerstjens, Ming-Xing Luo and Marc-Olivier Renou
• Abstract summary: Bell's theorem proves that quantum theory is inconsistent with local physical models. In the last decade, the investigation of nonlocality has moved beyond Bell's theorem to consider more sophisticated experiments. This review discusses the main concepts, methods, results and future challenges in the emerging topic of Bell nonlocality in networks.
• Score: 62.997667081978825
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

Related papers

• Causal Data Fusion with Quantum Confounders [0.8437187555622164]
  We show quantum experiments can generate observational and interventional data with a non-classical signature when pieced together that cannot be reproduced classically. We show that non-classicality genuine to the fusion of multiple data tables is achievable with quantum resources. Our work shows incorporating interventions can be a powerful tool to detect non-classicality beyond the violation of a standard Bell inequality.
  arXiv  Detail & Related papers  (2024-05-29T17:10:30Z)
• Quantum non-classicality in the simplest causal network [0.41942958779358674]
  Bell's theorem prompts us with a fundamental inquiry: what is the simplest scenario leading to the incompatibility between quantum correlations and the classical theory of causality? Here we demonstrate that quantum non-classicality is possible in a network consisting of only three dichotomic variables, without the need of the locality assumption neither external measurement choices.
  arXiv  Detail & Related papers  (2024-04-19T11:05:52Z)
• Proposals for ruling out the real quantum theories in an entanglement-swapping quantum network with causally independent sources [4.878380852633981]
  We study the discrimination between the real and complex quantum theories with an entanglement swapping scenario. We find a proposal with optimal coefficients of the correlation function which could give a larger discrimination between the real and quantum theories.
  arXiv  Detail & Related papers  (2023-12-22T09:22:09Z)
• Percolation Theories for Quantum Networks [5.004146855779428]
  Review paper discusses a fundamental question: how can entanglement be effectively and indirectly distributed between distant nodes in an imperfect quantum network? We show that the classical percolation frameworks do not uniquely define the network's indirect connectivity. This realization leads to the emergence of an alternative theory called concurrence percolation,'' which uncovers a previously unrecognized quantum advantage that emerges at large scales.
  arXiv  Detail & Related papers  (2023-10-27T18:24:58Z)
• Entanglement-Assisted Quantum Networks: Mechanics, Enabling Technologies, Challenges, and Research Directions [66.27337498864556]
  This paper presents a comprehensive survey of entanglement-assisted quantum networks. It provides a detailed overview of the network structure, working principles, and development stages. It also emphasizes open research directions, including architecture design, entanglement-based network issues, and standardization.
  arXiv  Detail & Related papers  (2023-07-24T02:48:22Z)
• Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
  We explore the applicability of quantum-data learning to practical problems in high-energy physics. We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states. The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
  arXiv  Detail & Related papers  (2023-06-29T18:00:01Z)
• Experimental genuine tripartite nonlocality in a quantum triangle network [0.6745502291821955]
  Quantum networks can lead to a genuine form of tripartite nonlocality, where classical models are unable to mimic the quantum predictions even if some of the parties are allowed to communicate. We show that such networks can lead to a genuine form of tripartite nonlocality, where classical models are unable to mimic the quantum predictions even if some of the parties are allowed to communicate.
  arXiv  Detail & Related papers  (2022-04-01T12:28:02Z)
• Proofs of network quantum nonlocality aided by machine learning [68.8204255655161]
  We show that the family of quantum triangle distributions of [DOI40103/PhysRevLett.123.140] did not admit triangle-local models in a larger range than the original proof. We produce a large collection of network Bell inequalities for the triangle scenario with binary outcomes, which are of independent interest.
  arXiv  Detail & Related papers  (2022-03-30T18:00:00Z)
• From a quantum theory to a classical one [117.44028458220427]
  We present and discuss a formal approach for describing the quantum to classical crossover. The method was originally introduced by L. Yaffe in 1982 for tackling large-$N$ quantum field theories.
  arXiv  Detail & Related papers  (2020-04-01T09:16:38Z)
• Quantum Mechanical description of Bell's experiment assumes Locality [91.3755431537592]
  Bell's experiment description assumes the (Quantum Mechanics-language equivalent of the classical) condition of Locality. This result is complementary to a recently published one demonstrating that non-Locality is necessary to describe said experiment. It is concluded that, within the framework of Quantum Mechanics, there is absolutely no reason to believe in the existence of non-Local effects.
  arXiv  Detail & Related papers  (2020-02-27T15:04:08Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.