Optimal randomness generation from optical Bell experiments

Alejandro Máttar, Paul Skrzypczyk, Jonatan Bohr Brask, Daniel Cavalcanti, Antonio Acín

Research output: Contribution to journalArticle (Academic Journal)peer-review

4 Citations (Scopus)


Genuine randomness can be certified from Bell tests without any detailed assumptions on the working of the devices with which the test is implemented. An important class of experiments for implementing such tests is optical setups based on polarization measurements of entangled photons distributed from a spontaneous parametric down conversion source. Here we compute the maximal amount of randomness which can be certified in such setups under realistic conditions. We provide relevant yet unexpected numerical values for the physical parameters and achieve four times more randomness than previous methods.

Original languageEnglish
Article number022003
JournalNew Journal of Physics
Publication statusPublished - 10 Feb 2015


  • Bell nonlocality
  • device independent
  • quantum information
  • quantum optics
  • random number generation


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