Bounds on Petz-R\'enyi Divergences and their Applications for
Device-Independent Cryptography
Bounds on Petz-R\'enyi Divergences and their Applications for
Device-Independent Cryptography
Variational techniques have been recently developed to find tighter bounds on the von Neumann entropy in a completely device-independent (DI) setting. This, in turn, has led to significantly improved key rates of DI protocols, in both the asymptotic limit as well as in the finite-size regime. In this paper, we …