Probing quantum correlations in many-body systems: a review of scalable methods

I Frérot, M Fadel, M Lewenstein - Reports on Progress in Physics, 2023 - iopscience.iop.org
We review methods that allow one to detect and characterize quantum correlations in many-
body systems, with a special focus on approaches which are scalable. Namely, those …

Photonic source of heralded Greenberger-Horne-Zeilinger states

H Cao, LM Hansen, F Giorgino, L Carosini, P Zahálka… - Physical Review Letters, 2024 - APS
Generating large multiphoton entangled states is of main interest due to enabling universal
photonic quantum computing and all-optical quantum repeater nodes. These applications …

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 …

Test of genuine multipartite nonlocality

YL Mao, ZD Li, S Yu, J Fan - Physical Review Letters, 2022 - APS
While Bell nonlocality of a bipartite system is counterintuitive, multipartite nonlocality in our
many-body world turns out to be even more so. Recent theoretical study reveals in a theory …

Probing many-body Bell correlation depth with superconducting qubits

K Wang, W Li, S Xu, M Hu, J Chen, Y Wu… - arxiv preprint arxiv …, 2024 - arxiv.org
Quantum nonlocality describes a stronger form of quantum correlation than that of
entanglement. It refutes Einstein's belief of local realism and is among the most distinctive …

Genuine multipartite entanglement detection with imperfect measurements: Concept and experiment

H Cao, S Morelli, LA Rozema, C Zhang, A Tavakoli… - Physical Review Letters, 2024 - APS
Standard procedures for entanglement detection assume that experimenters can exactly
implement specific quantum measurements. Here, we depart from such idealizations and …

Guarantees on the structure of experimental quantum networks

A Ulibarrena, JW Webb, A Pickston, J Ho… - npj Quantum …, 2024 - nature.com
Quantum networks connect and supply a large number of nodes with multi-party quantum
resources for secure communication, networked quantum computing and distributed …

Experimental demonstration of genuine tripartite nonlocality under strict locality conditions

L Huang, XM Gu, YF Jiang, D Wu, B Bai, MC Chen… - Physical Review Letters, 2022 - APS
Nonlocality captures one of the counterintuitive features of nature that defies classical
intuition. Recent investigations reveal that our physical world's nonlocality is at least …

Strength of statistical evidence for genuine tripartite nonlocality

S Patra, P Bierhorst - Physical Review A, 2024 - APS
Recent advancements in network nonlocality have led to the concept of local operations and
shared randomness-based genuine multipartite nonlocality (LOSR-GMNL). In this paper, we …

Experimental genuine quantum nonlocality in the triangle network

NN Wang, C Zhang, H Cao, K Xu, BH Liu… - arxiv preprint arxiv …, 2024 - arxiv.org
In the last decade, it was understood that quantum networks involving several independent
sources of entanglement which are distributed and measured by several parties allowed for …