Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 35: Quantum Information (Quantum Communication) II

Q 35.4: Talk

Wednesday, March 16, 2022, 14:45–15:00, Q-H12

Open-Source LDPC Error Correction for QKD — •Adomas Baliuka^1,2, Elsa Dupraz³, Rengaraj Govindaraj^1,2, Michael Auer^1,2,4, Peter Freiwang^1,2, Lukas Knips^1,2,5, and Harald Weinfurter^1,2,5 — ¹Ludwig-Maximilian-University (LMU), Munich, Germany — ²Munich Center for Quantum Science and Technology (MCQST), Munich, Germany — ³IMT Atlantique, Lab-STICC, UMR CNRS 6285, F-29238, France — ⁴Universität der Bundeswehr München, Neubiberg, Germany — ⁵Max Planck Institute of Quantum Optics (MPQ), Garching, Germany

Error correction is an essential step in the classical post-processing of all quantum key distribution (QKD) protocols. We present error correction methods optimized for discrete variable (DV) QKD. Our methods are based on irregular quasi-cyclic (QC) low density parity check (LDPC) codes and state-of-the-art rate adaption techniques, thereby increasing the efficiency for key generation. The codes are freely available as an ongoing open-source project (doi.org/10.5281/zenodo.5589543 and github.com/XQP-Munich/LDPC4QKD).