Machine-learning-based device-independent certification of quantum networks

Autor(en)

Nicola D'Alessandro, Beatrice Polacchi, George Moreno, Emanuele Polino, Rafael Chaves, Iris Agresti, Fabio Sciarrino

Abstrakt

Witnessing nonclassical behavior is a crucial ingredient in quantum information processing. For that, one has to optimize the quantum features a given physical setup can give rise to, which is a hard computational task currently tackled with semidefinite programming, a method limited to linear objective functions and that becomes prohibitive as the complexity of the system grows. Here, we propose an alternative strategy, which exploits a feedforward artificial neural network to optimize the correlations compatible with arbitrary quantum networks. A remarkable step forward with respect to existing methods is that it deals with nonlinear optimization constraints and objective functions, being applicable to scenarios featuring independent sources and nonlinear entanglement witnesses. Furthermore, it offers a significant speedup in comparison with other approaches, thus allowing to explore previously inaccessible regimes. We also extend the use of the neural network to the experimental realm, a situation in which the statistics are unavoidably affected by imperfections, retrieving device-independent uncertainty estimates on Bell-like violations obtained with independent sources of entangled photon states. In this way, this work paves the way for the certification of quantum resources in networks of growing size and complexity.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation, Forschungsverbund Quantum Aspects of Space Time

Externe Organisation(en)

Università degli Studi di Roma La Sapienza, Universidade Federal do Rio Grande do Norte, Universidade Federal Rural de Pernambuco

Journal

Physical Review Research

Band

5

Anzahl der Seiten

16

ISSN

2643-1564

DOI

https://doi.org/10.1103/PhysRevResearch.5.023016

Publikationsdatum

04-2023

Peer-reviewed

Ja

ÖFOS 2012

102019 Machine Learning, 103025 Quantenmechanik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/6b2f9ef2-9e04-4cdc-b422-963bb4dac075