Year: 2022
Type: article
Abstract: A single-photon maximally entangled state is obtained when a photon impinges on a balanced beamsplitter.Its nonlocal properties have been intensively debated in the quantum optics and foundations communities.It is however clear that a standard Bell test made only of passive optical elements cannot reveal the nonlocality of this state.We show that the nonlocality of single-photon entangled states can nevertheless be revealed in a quantum network made only of beamsplitters and photodetectors.In our protocol, three single-photon entangled states are distributed in a triangle network, introducing indeterminacy in the photons' paths and creating nonlocal correlations without the need for measurements choices.We discuss a concrete experimental realization and provide numerical evidence of the tolerance of our protocol to standard noise sources.Our results show that single-photon entanglement may constitute a promising solution to generate genuine network-nonlocal correlations useful for Bell-based quantum information protocols.
Source: Physical Review Research
Institutions: Institute of Photonic Sciences, Barcelona Institute of Science and Technology, University of Geneva, Austrian Academy of Sciences, TU Wien, Universidad Complutense de Madrid, Consejo Superior de Investigaciones Científicas, Institute of Mathematical Sciences, Universidad Carlos III de Madrid, Universidad Autónoma de Madrid, Institució Catalana de Recerca i Estudis Avançats
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
Funders: National Science Foundation, Centres de Recerca de Catalunya, European Commission, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Generalitat de Catalunya, Ministerio de Economía y Competitividad, Ministerio de Ciencia e Innovación, Université de Genève, Fundación Bancaria Caixa d'Estalvis i Pensions de Barcelona, European Research Council, Agència de Gestió d'Ajuts Universitaris i de Recerca, Horizon 2020, Agencia Estatal de Investigación
Awards: G1255325603, G1316516701, G1701110065, G1908469581, G1972043705, G2211715188, G2290189609, G2371300692, G2763573136, G2915544813, G2967504892, Device-Independent Approach to Quantum Physics, G3180925806, G3803561910, G4233400527, G434337789, G4817584610, G4909453311, G4944594896, G4946619525, G5132640529, G5411664102, G5814212147, G5845768719, G6079651610, G6290233267, G6406290544, G6482940084, G6607828179, G6829033866, Toward a Global Quantum Network, G7685134749, G7731791180, G773280237, G7854272128, G8180681537, Efficient characterization of high-dimensional and multipartite entanglement on networks - an analytic and machine learning approach
OpenAlex ID: W4220936934