Esther Hänggi

Fast single-photon detectors and real-time key distillation enable high secret-key-rate quantum key distribution systems

2023 · Nature Photonics

Quantum key distribution has emerged as the most viable scheme to guarantee information security in the presence of large-scale quantum computers and, thanks to the continuous progress made in the past 20 years, it is …

Impossibility of quantum private queries

2026 · Physical Review Research

Symmetric private information retrieval is a cryptographic task allowing a user to query a database and obtain exactly one entry without revealing to the owner of the database which element was accessed. The task is …