Hi all,
Tomorrow our visitor Mikka Stasiuk will tell us about their work on 'The Quantum Chernoff Divergence in Advantage Distillation for QKD and DIQKD'. See below for the abstract. The talk will take place at 2pm in HIT E 41.1. Contrary to the past, there will be no zoom livestreaming anymore of the QIT seminar.
Best, Ladina
Title: The Quantum Chernoff Divergence in Advantage Distillation for QKD and DIQKD. ArXiv link: https://arxiv.org/abs/2212.06975
Abstract:
Device-independent quantum key distribution (DIQKD) aims to mitigate adversarial exploitation of imperfections in quantum devices, by providing an approach for secret key distillation with modest security assumptions. Advantage distillation, a two-way communication procedure in error correction, has proven effective in raising noise tolerances in both device-dependent and device-independent QKD. We demonstrate how the quantum Chernoff divergence, a distinguishability measure that arises in symmetric hypothesis testing, can be used to characterize the circumstances under which DIQKD with advantage distillation is possible and raise the noise tolerance thresholds for DIQKD.