100Mbps Reconciliation for Quantum Key Distribution Using a Single Graphics Processing Unit

Abstract

An efficient error reconciliation scheme is important for post-processing of quantum key distribution (QKD). Recently, a multi-matrix low-density parity-check codes based reconciliation algorithm which can provide remarkable perspectives for high efficiency information reconciliation was proposed. This paper concerns the improvement of reconciliation performance. Multi-matrix algorithm is implemented and optimized on the graphics processing unit (GPU) to obtain high reconciliation throughput. Experimental results indicate that GPU-based algorithm can highly improve reconciliation throughput to an average 85.67 Mbps and a maximum 102.084 Mbps with typical code rate and efficiency. This is the best performance of reconciliation on GPU platform to our knowledge.

arXiv comment8pages, 3figures, 4tables

References in corpus (4)

• Provably Secure and Practical Quantum Key Distribution over 307 km of Optical Fibre
• High speed error correction for continuous-variable quantum key distribution with multi-edge type LDPC code
• Error estimation at the information reconciliation stage of quantum key distribution
• Multi-Matrix Post-Processing for Quantum Key Distribution