Self-testing two-qubit maximally entangled states from generalized Clauser-Horne-Shimony-Holt tests

  title={Self-testing two-qubit maximally entangled states from generalized Clauser-Horne-Shimony-Holt tests},
  author={Xavier Valcarce and Julian Zivy and Nicolas Sangouard and Pavel Sekatski},
  journal={Physical Review Research},
Device-independent certification, also known as self-testing, aims at guaranteeing the proper functioning of untrusted and uncharacterized devices. For example, the quality of an unknown source expected to produce two-qubit maximally entangled states can be evaluated in a bi-partite scenario, each party using two binary measurements. The most robust approach consists in deducing the fidelity of produced states with respect to a two-qubit maximally entangled state from the violation of the CHSH… 

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