Improving semi-device-independent randomness certification by entropy accumulation

Autor:	Carceller, Carles Roch i, Faria, Lucas Nunes, Liu, Zheng-Hao, Sguerso, Nicolò, Andersen, Ulrik Lund, Neergaard-Nielsen, Jonas Schou, Brask, Jonatan Bohr
Rok vydání:	2024
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	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 characterised, i.e. requiring little trust in their implementation. It was recently shown that the amount of certifiable randomness can be greatly improved using the so-called Entropy Accumulation Theorem generalised 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. Comment: 18 pages, 5 figures, comments are welcome
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2405.04244 Zobrazit plný text záznamu View this record from Arxiv