QLunch: Mads Friis Frand-Madsen

Speaker: Mads Friis Frand-Madsen from QMATH

Title: "What are you hiding?"

Abstract: Understanding the difference between entanglement distillation and achieving secret key is central to the discovery of non-trivial protocols for cryptographic purposes. The discovery of states with distillable secret key from which maximally entangled states cannot be distilled arose from the intuition that quantum data hiding might be related to secrecy and entanglement distillation. In this presentation we introduce fundamental aspects of quantum key distribution and describe how quantum data hiding plays a role in understanding the optimality of quantum key distribution protocols.