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Updated: Jan 31, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Self-Testing Entangled Measurements in Quantum Networks
Marc Olivier Renou1, Jędrzej Kaniewski2,3, Nicolas Brunner1
1Département de Physique Appliquée, Université de Genève, CH-1211 Geneve, Switzerland.
Abstract:
Self-testing refers to the possibility of characterizing an unknown quantum device based only on the observed statistics. Here we develop methods for self-testing entangled quantum measurements, a key element for quantum networks. Our approach is based on the natural assumption that separated physical sources in a network should be considered independent. This provides a natural formulation of the problem of certifying entangled measurements. Considering the setup of entanglement swapping, we derive a robust self-test for the Bell-state measurement, tolerating noise levels up to ∼5%. We also discuss generalizations to other entangled measurements.
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