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 …

Ruling out real-valued standard formalism of quantum theory

MC Chen, C Wang, FM Liu, JW Wang, C Ying… - Physical Review Letters, 2022 - APS
Standard quantum theory was formulated with complex-valued Schrödinger equations,
wave functions, operators, and Hilbert spaces. Previous work attempted to simulate quantum …

The deep space quantum link: prospective fundamental physics experiments using long-baseline quantum optics

M Mohageg, L Mazzarella, C Anastopoulos… - EPJ Quantum …, 2022 - epjqt.epj.org
Abstract The National Aeronautics and Space Administration's Deep Space Quantum Link
mission concept enables a unique set of science experiments by establishing robust …

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 …

Structural balance and random walks on complex networks with complex weights

Y Tian, R Lambiotte - SIAM Journal on Mathematics of Data Science, 2024 - SIAM
Complex numbers define the relationship between entities in many situations. A canonical
example would be the off-diagonal terms in a Hamiltonian matrix in quantum physics …

Complex networks with complex weights

L Böttcher, MA Porter - Physical Review E, 2024 - APS
In many studies, it is common to use binary (ie, unweighted) edges to examine networks of
entities that are either adjacent or not adjacent. Researchers have generalized such binary …

Certification of non-classicality in all links of a photonic star network without assuming quantum mechanics

NN Wang, A Pozas-Kerstjens, C Zhang, BH Liu… - Nature …, 2023 - nature.com
Networks composed of independent sources of entangled particles that connect distant
users are a rapidly developing quantum technology and an increasingly promising test-bed …

Pseudorandom unitaries are neither real nor sparse nor noise-robust

T Haug, K Bharti, DE Koh - arXiv preprint arXiv:2306.11677, 2023 - arxiv.org
Pseudorandom quantum states (PRSs) and pseudorandom unitaries (PRUs) possess the
dual nature of being efficiently constructible while appearing completely random to any …

Certifying Network Topologies and Nonlocalities of Triangle Quantum Networks

YL Mao, H Chen, B Guo, S Liu, ZD Li, MX Luo, J Fan - Physical Review Letters, 2024 - APS
Quantum networks promise unprecedented advantages in information processing and open
up intriguing new opportunities in fundamental research, where network topology and …

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 …