Performance of Cascade and LDPC Codes for Information Reconciliation on Industrial Quantum Key Distribution Systems
Year: 2025
Authors: Mueller R., De Lazzari C., Chirici F., Vagniluca I., Oxenlowe L.K., Forchhammer S., Zavatta A., Bacco D.
Autors Affiliation: Tech Univ Denmark, Dept Elect & Photon Engn, Lyngby, Denmark; QTI S r l, Florence, Italy; CNR INO, Natl Inst Opt, Florence, Italy; Univ Florence, Dept Phys & Astron, Sesto Fiorentino, Italy.
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.
Journal/Review: IET QUANTUM COMMUNICATION
Volume: 6 (1) Pages from: e70003-1 to: e70003-16
More Information: This work was funded by the Center of Excellence SPOC (Ref DNRF123), the European Union (ERC, QOMUNE, 101077917), the project EQUO (European QUantum ecOsystems) which is funded by the European Commission in the Digital Europe Programme under the Grant Agreement No. 101091561, the project SERICS (PE00000014) under the MUR National Recovery and Resilience Plan funded by the European Union-NextGenerationEU, the project QuONTENT under the Progetti di Ricerca, CNR programme funded by the Consiglio Nazionale delle Ricerche (CNR) and by the European Union, and the project QUID (Quantum Italy Deployment) funded Performance of Cascade and LDPC codes on Industrial QKD systems 2 by the European Commission in the Digital Europe Programme under the Grant Agreement No. 101091408.KeyWords: error correction codes; quantum communication; quantum cryptographyDOI: 10.1049/qtc2.70003
