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 constitute the first experimental demonstration of full network nonlocality beyond the bilocal network.
Theory-agnostic nonclassicality certification in an integrated photonic circuit
University of Gdańsk（格但斯克大学）；Griffith University（格里菲斯大学）；Sapienza Università di Roma（罗马大学）；Sparrow Quantum（麻雀量子）；Perimeter Institute for Theoretical Physics（理论物理柏拉图研究所）；Consiglio Nazionale delle Ricerche（意大利国家研究委员会）；Politecnico di Milano（米兰理工大学）
Optimal interferometric certification of multi-photon indistinguishability
Université libre de Bruxelles（布鲁塞尔自由大学）；International Iberian Nanotechnology Laboratory (INL)（伊比利亚纳米技术实验室）；Center for Quantum Enabled-Computing, Center for Theoretical Physics of the Polish Academy of Sciences（波兰科学院理论物理中心量子使能计算中心）；Instituto de Física, Universidade Federal Fluminense（弗鲁米嫩塞联邦大学物理研究所）
Certification of linear optical quantum state preparation
Freie Universität Berlin（柏林自由大学）；University of Twente（特温特大学）；Eindhoven University of Technology（埃因霍温理工大学）；PiCard Systems B.V.（PiCard系统有限公司）；Helmholtz-Zentrum Berlin fur Materialien und Energie（亥姆霍兹柏林材料与能源中心）；Fraunhofer Heinrich Hertz Institute（弗劳恩霍夫海因里希赫兹研究所）
Generation and read-out of many-body Bell correlations with a probe qubit
Qilimanjaro Quantum Tech（奇力马扎罗量子技术）；ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology（ICFO-光子科学研究所，巴塞罗那科学技术研究院）；Faculty of Physics, University of Warsaw（华沙大学物理学院）
Experimental certification of the nonlocal advantages of quantum imaginarity
College of Physics and Optoelectronic Engineering, Ocean University of China（中国海洋大学物理与光电工程学院）；China Mobile (Suzhou) Software Technology Company Limited（中国移动（苏州）软件技术有限公司）；Engineering Research Center of Advanced Marine Physical Instruments and Equipment (Ministry of Education), Ocean University of China（中国海洋大学先进海工高技术装备教育部工程研究中心）；Qingdao Key Laboratory of Advanced Optoelectronics, Ocean University of China（中国海洋大学青岛先进光电子学重点实验室）
Detection Efficiency Bounds in (Semi-)Device-Independent Scenarios
Federal University of Rio Grande do Norte（北里奥格兰德联邦大学）；International Institute of Physics, Federal University of Rio Grande do Norte（北里奥格兰德联邦大学国际物理研究所）；School of Science and Technology, Federal University of Rio Grande do Norte（北里奥格兰德联邦大学理学院）
Certification of the genuine resolution of photon number resolving detectors
University of Geneva（日内瓦大学）；Constructor University（Constructor 大学）；Uppsala University（乌普萨拉大学）；KTH Royal Institute of Technology（瑞典皇家理工学院）；Stockholm University（斯德哥尔摩大学）
Certification of Gaussian Boson Sampling via graph theory
Sapienza Università di Roma（罗马大学）；Dipartimento di Fisica, Sapienza Università di Roma（罗马大学物理系）；Dipartimento di Informatica, Sapienza Università di Roma（罗马大学计算机系）
Semi-device independent characterization of multiphoton indistinguishability
Sapienza Università di Roma（罗马大学）；International Iberian Nanotechnology Laboratory (INL)（伊比利亚纳米技术国际实验室）；Politecnico di Milano（米兰理工大学）；Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche (IFN-CNR)（国家研究委员会光子学与纳米技术研究所）；Ephos, Inc.（Ephos公司）
Heriot-Watt University（赫瑞-瓦特大学）；Leibniz University Hannover（汉诺威莱布尼茨大学）；NTT, Inc.（日本电信电话株式会社）；Università di Pavia（帕维亚大学）；Swinburne University of Technology（斯威本科技大学）；Institut national de la recherche scientifique, INRS-EMT（国家科学研究院）；University of the Witwatersrand（威特沃特斯兰德大学）；Universidad de Concepción（康塞普西翁大学）；Chapman University（查普曼大学）
The Richness of Bell Nonlocality: Generalized Bell Polygamy and Hyper-Polygamy
Institute of Theoretical Physics and Astrophysics, University of Gdańsk（格但斯克大学理论物理与天体物理研究所）；International Centre for Theory of Quantum Technologies, University of Gdansk（格但斯克大学量子技术理论国际中心）；Faculty of Physics, Ludwig Maximilian University（慕尼黑路德维希-马克西米利安大学物理学院）
