Certification of non-classicality in all links of a photonic star network without assuming quantum mechanics
Year: 2023
Type: article
Abstract: Networks composed of independent sources of entangled particles that connect distant users are a rapidly developing quantum technology and an increasingly promising test-bed for fundamental physics. Here we address the certification of their post-classical properties through demonstrations of full network nonlocality. Full network nonlocality goes beyond standard nonlocality in networks by falsifying any model in which at least one source is classical, even if all the other sources are limited only by the no-signaling principle. We report on the observation of full network nonlocality in a star-shaped network featuring three independent sources of photonic qubits and joint three-qubit entanglement-swapping measurements. Our results demonstrate that experimental observation of full network nonlocality beyond the bilocal scenario is possible with current technology.
Source: Nature Communications
Institutions: University of Science and Technology of China, CAS Key Laboratory of Quantum Information, USTC, Universidad Complutense de Madrid, Consejo Superior de Investigaciones Científicas, Institute of Mathematical Sciences, Universidad Carlos III de Madrid, Universidad Autónoma de Madrid, University of Geneva, Austrian Academy of Sciences, Lund University
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,290
Funders: National Science Foundation, Wenner-Gren Foundation, Comunidad de Madrid, National Centres of Competence in Research SwissMAP, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China, Knut och Alice Wallenbergs Stiftelse, Ministerio de Ciencia e Innovación, Fundación General CSIC, University of Science and Technology of China, Agencia Estatal de Investigación, Fundamental Research Funds for the Central Universities, Wallenberg Centre for Molecular and Translational Medicine, Wallenberg Center for Quantum Technology, Chalmers University of Technology, NextGenerationEU
Awards: G1175115578, G121809054, G1484669290, G1701110065, G183983926, G1855990336, G2262748287, G2309174360, G2469010403, G2660406951, G279363373, G2967504892, G300979063, G3095188893, G34346518, G3480869486, G3518538256, G387506447, G391183672, G4057981298, G4233400527, G425668148, G430777504, G4526231891, G480488906, G4886082077, G488842982, G5080475149, G5421974903, G5560776957, G5662792045, G5805502524, G5845768719, G6175538065, 量子相干性的资源化理论及实验研究, G6687049611, G7084143925, G712370837, G7521977119, G7550798192, G8355809004, G897484643, G99296377
OpenAlex ID: W4365810940