Performance of Cascade and LDPC Codes for Information Reconciliation on Industrial Quantum Key Distribution Systems
Ronny Müller, Claudia De Lazzari, Fernando Chirici, Ilaria Vagniluca, Leif Katsuo Oxenløwe, Søren O. Forchhammer, Alessandro Zavatta, Davide Bacco · IET Quantum Communication · 2025
ABSTRACT Information reconciliation is a critical component of quantum key distribution, ensuring that mismatches between Alice's and Bob's keys are corrected. In this study, we analyse, simulate, optimise and compare the performance of two prevalent algorithms used for information reconciliation: Cascade and LDPC codes in combination with the blind protocol. We focus on their applicability in practical and industrial settings, operating in realistic and application‐close conditions. The results are further validated through evaluation on a live industrial QKD system.