Transforming Bell's inequalities into state classifiers with machine learning

YC Ma, MH Yung - npj Quantum Information, 2018 - nature.com
In quantum information science, a major challenge is to look for an efficient means for
classifying quantum states. An attractive proposal is to utilize Bell's inequality as an …

Characterizing the uncertainty relation via a class of measurements

F Huang, F Wu, L Tang, ZW Mo, MQ Bai - Physica Scripta, 2023 - iopscience.iop.org
The connection between uncertainty and entanglement is a prevalent topic in quantum
information processing. Based on a broad class of informationally complete symmetric …

Entanglement in macroscopic systems

J Sperling, IA Walmsley - Physical Review A, 2017 - APS
We present a theoretical study of entanglement in ensembles consisting of an arbitrary
number of particles. Multipartite entanglement criteria in terms of observables are formulated …

Efficient and robust certification of genuine multipartite entanglement in noisy quantum error correction circuits

A Rodriguez-Blanco, A Bermudez, M Müller… - PRX quantum, 2021 - APS
Ensuring the correct functioning of quantum error correction (QEC) circuits is crucial to
achieve fault tolerance in realistic quantum processors subjected to noise. The first …

An entanglement-based volumetric benchmark for near-term quantum hardware

KE Hamilton, N Laanait, A Francis… - arXiv preprint arXiv …, 2022 - arxiv.org
We introduce a volumetric benchmark for near-term quantum platforms based on the
generation and verification of genuine entanglement across n-qubits using graph states and …

Numerical construction of multipartite entanglement witnesses

S Gerke, W Vogel, J Sperling - Physical Review X, 2018 - APS
Entanglement in multipartite systems is a key resource for quantum information and
communication protocols, making its verification in complex systems a necessity. Because …

Class of Bell-diagonal entanglement witnesses in : Optimization and the spanning property

A Bera, FA Wudarski, G Sarbicki, D Chruściński - Physical Review A, 2022 - APS
Two classes of Bell-diagonal indecomposable entanglement witnesses in C 4⊗ C 4 are
considered. Within the first class, we find a generalization of the well-known Choi witness …

Design and experimental performance of local entanglement witness operators

D Amaro, M Müller - Physical Review A, 2020 - APS
Entanglement is a central concept in quantum information and a key resource for many
quantum protocols. In this work we propose and analyze a class of entanglement witnesses …

Experimental witnessing for entangled states with limited local measurements

G Zhu, C Zhang, K Wang, L Xiao, P Xue - Photonics Research, 2022 - opg.optica.org
We experimentally demonstrate a method for detection of entanglement via construction of
entanglement witnesses from a limited fixed set of local measurements (M). Such a method …

Precise detection of multipartite entanglement in four-qubit Greenberger–Horne–Zeilinger diagonal states

XY Chen, LZ Jiang, ZA Xu - Frontiers of Physics, 2018 - Springer
We propose a method of constructing the separability criteria for multipartite quantum states
on the basis of entanglement witnesses. The entanglement witnesses are obtained by …