Improving semi-device-independent randomness certification by entropy accumulation
Certified randomness guaranteed to be unpredictable by adversaries is central to information security. The fundamental randomness inherent in quantum physics makes certification possible from devices that are only weakly characterized, i.e., requiring little trust in their implementation. It was recently shown that the amount of certifiable randomness can be improved using the so-called entropy accumulation theorem generalized to prepare-and-measure settings. Furthermore, this approach allows a finite-size analysis which avoids assuming that all rounds are independent and identically distributed. Here, we demonstrate this improvement in semi-device-independent randomness certification from untrusted measurements.
Authors
- Lucas Nunes Faria
- Carles Roch i Carceller (ORCID: https://orcid.org/0000-0002-1563-9451)
- Ulrik L. Andersen (ORCID: https://orcid.org/0000-0002-1990-7687)
- Jonas S. Neergaard-Nielsen (ORCID: https://orcid.org/0000-0002-8585-0068)
- Zhenghao Liu (ORCID: https://orcid.org/0000-0001-8067-1477)
- Jonatan Bohr Brask (ORCID: https://orcid.org/0000-0003-3859-0272)
- Nicolò Sguerso
Institutions
- Lund University (SE)
- Technical University of Denmark (DK)
Publication Details
- Journal
- Physical review. A/Physical review, A
- Published
- 2025-08-25
- DOI
- https://doi.org/10.1103/dwdv-89bj
- Citations
- 2
- Primary Topic
- Physical Unclonable Functions (PUFs) and Hardware Security
- Type
- article
- Field-Weighted Citation Impact
- 4.54
Funders
- Villum Fonden
- Innovationsfonden
- National Research Foundation
- Danmarks Grundforskningsfond
- Carlsbergfondet
- Korea Advanced Institute of Science and Technology
- HORIZON EUROPE Framework Programme