Bell nonlocality in networks

A Tavakoli, A Pozas-Kerstjens, MX Luo… - Reports on Progress in …, 2022 - iopscience.iop.org
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 …

Machine learning meets quantum foundations: A brief survey

K Bharti, T Haug, V Vedral, LC Kwek - AVS Quantum Science, 2020 - pubs.aip.org
The goal of machine learning is to facilitate a computer to execute a specific task without
explicit instruction by an external party. Quantum foundations seek to explain the conceptual …

Entanglement swap** and quantum correlations via symmetric joint measurements

CX Huang, XM Hu, Y Guo, C Zhang, BH Liu… - Physical Review Letters, 2022 - APS
We use hyperentanglement to experimentally realize deterministic entanglement swap**
based on quantum elegant joint measurements. These are joint projections of two qubits …

Network quantum steering

BDM Jones, I Šupić, R Uola, N Brunner… - Physical Review Letters, 2021 - APS
The development of large-scale quantum networks promises to bring a multitude of
technological applications as well as shed light on foundational topics, such as quantum …

Experimental nonclassicality in a causal network without assuming freedom of choice

E Polino, D Poderini, G Rodari, I Agresti… - Nature …, 2023 - nature.com
In a Bell experiment, it is natural to seek a causal account of correlations wherein only a
common cause acts on the outcomes. For this causal structure, Bell inequality violations can …

Genuine multipartite nonlocality is intrinsic to quantum networks

P Contreras-Tejada, C Palazuelos, JI de Vicente - Physical Review Letters, 2021 - APS
Quantum entanglement and nonlocality are inextricably linked. However, while
entanglement is necessary for nonlocality, it is not always sufficient in the standard Bell …

Experimental genuine tripartite nonlocality in a quantum triangle network

A Suprano, D Poderini, E Polino, I Agresti, G Carvacho… - PRX Quantum, 2022 - APS
Quantum networks are the center of many of the recent advances in quantum science, not
only leading to the discovery of new properties in the foundations of quantum theory but also …

Proofs of network quantum nonlocality in continuous families of distributions

A Pozas-Kerstjens, N Gisin, MO Renou - Physical Review Letters, 2023 - APS
The study of nonlocality in scenarios that depart from the bipartite Einstein-Podolsky-Rosen
setup is allowing one to uncover many fundamental features of quantum mechanics …

Sharing nonlocality in a quantum network by unbounded sequential observers

SS Mahato, AK Pan - Physical Review A, 2022 - APS
Of late, there has been an upsurge of interest in studying the sequential sharing of various
forms of quantum correlations, viz., nonlocality, preparation contextuality, coherence, and …

Quantifying quantumness of channels without entanglement

HY Ku, J Kadlec, A Černoch, MT Quintino, W Zhou… - PRX Quantum, 2022 - APS
Quantum channels breaking entanglement, incompatibility, or nonlocality are defined as
such because they are not useful for entanglement-based, one-sided device-independent …