Attacks on BB84 with Two Identical and Measured Photons
Conference: ECOC 2024 - 50th European Conference on Optical Communication
09/22/2024 - 09/26/2024 at Frankfurt, Germany
Proceedings: ITG-Fb. 317: ECOC 2024
Pages: 4Language: englishTyp: PDF
Authors:
Stephan, Mira; Klingmann, Fabian; Meissner, Philipp; Kirrbach, Rene
Abstract:
Quantum key distribution (QKD) systems often use attenuated lasers. Therefore, some pulses contain more than one photon. This contribution shows attacks on the BB84 protocol with two identical photons in a downstream QKD network. Phase covariant cloning is optimal but other attacks become more dangerous.