Year: 2024
Type: article
Abstract: With the increased availability of quantum technological devices, it becomes more important to have tools to guarantee their correct nonclassical behavior. This is especially important for quantum networks, which constitute the platforms where multipartite cryptographic protocols will be implemented, and where guarantees of nonclassicality translate into security proofs. We derive linear and nonlinear Bell-like inequalities for networks, whose violation certifies the absence of a minimum number of classical sources in them. We do so, first, without assuming that nature is ultimately governed by quantum mechanics, providing a hierarchy interpolating between network nonlocality and full network nonlocality. Second we insert this assumption, which leads to results more amenable to certification in experiments.
Source: Physical Review A
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, Comunidad de Madrid, National Centres of Competence in Research SwissMAP, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China, Universidad Complutense de Madrid, Southwest Jiaotong University, Ministerio de Ciencia e Innovación, Natural Science Foundation of Sichuan Province, Agencia Estatal de Investigación
Awards: G1175115578, G121809054, G1484669290, G1701110065, G1855990336, G2262748287, G2309174360, G2660406951, G2674018141, G279363373, G2967504892, G300979063, G3391185521, G34346518, G3480869486, G3643410308, G379951279, G387506447, G391183672, G4190985308, G4233400527, G425668148, G430777504, G480488906, G4886082077, G488842982, G5080475149, G5421974903, G5560776957, G5662792045, G5805502524, G5845768719, G7084143925, G712370837, G7521977119, VLSI-Systeme mit optischen Verbindungen - Vorstudie der technologischen Machbarkeit -, NCCR SwissMAP: The Mathematics of Physics, G897484643, 针对半经典客户端的可验证代理量子计算模型和协议研究, G94430966, G99296377
OpenAlex ID: W4401814512