Semi-device-independent random number generation with flexible assumptions

Matej Pivoluska*, Martin Plesch, Máté Farkas, Natália Ružičková, Clara Flegel, Natalia Herrera Valencia, Will McCutcheon, Mehul Malik, Edgar A. Aguilar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
85 Downloads (Pure)


Our ability to trust that a random number is truly random is essential for fields as diverse as cryptography and fundamental tests of quantum mechanics. Existing solutions both come with drawbacks—device-independent quantum random number generators (QRNGs) are highly impractical and standard semi-device-independent QRNGs are limited to a specific physical implementation and level of trust. Here we propose a framework for semi-device-independent randomness certification, using a source of trusted vacuum in the form of a signal shutter. It employs a flexible set of assumptions and levels of trust, allowing it to be applied in a wide range of physical scenarios involving both quantum and classical entropy sources. We experimentally demonstrate our protocol with a photonic setup and generate secure random bits under three different assumptions with varying degrees of security and resulting data rates.

Original languageEnglish
Article number50
Journalnpj Quantum Information
Publication statusPublished - 15 Mar 2021

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Statistical and Nonlinear Physics
  • Computer Networks and Communications
  • Computational Theory and Mathematics


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