Multi-Matrix Post-Processing for Quantum Key Distribution

Abstract

Post-processing is a significant step in quantum key distribution(QKD), which is used for correcting the quantum-channel noise errors and distilling identical corrected keys between two distant legitimate parties. Efficient error reconciliation protocol, which can lead to an increase in the secure key generation rate, is one of the main performance indicators of QKD setups. In this paper, we propose a multi-low-density parity-check codes based reconciliation scheme, which can provide remarkable perspectives for highly efficient information reconciliation. With testing our approach through data simulation, we show that the proposed scheme combining multi-syndrome-based error rate estimation allows a more accurate estimation about the error rate as compared with random sampling and single-syndrome estimation techniques before the error correction, as well as a significant increase in the efficiency of the procedure without compromising security and sacrificing reconciliation efficiency.

arXiv comment12 pages, 10 figures

References in corpus (13)

• Quantum Cryptography
• Quantum cryptography: Public key distribution and coin tossing
• The Security of Practical Quantum Key Distribution
• Decoy State Quantum Key Distribution
• Measurement-device-independent quantum key distribution
• Satellite-to-ground quantum key distribution
• Beating the PNS attack in practical quantum cryptography
• Full-field implementation of a perfect eavesdropper on a quantum cryptography system
• Device calibration impacts security of quantum key distribution
• Quantum Eavesdropping without Interception: An Attack Exploiting the Dead Time of Single Photon Detectors
• Fast, efficient error reconciliation for quantum cryptography
• Symmetric blind information reconciliation for quantum key distribution
• Error estimation at the information reconciliation stage of quantum key distribution

Cited by in corpus (4)

• Tools for the Performance Optimization of Single-Photon Quantum Key Distribution
• Asymmetric adaptive LDPC-based information reconciliation for industrial quantum key distribution
• Multi-matrix rate-compatible reconciliation for quantum key distribution
• 100Mbps Reconciliation for Quantum Key Distribution Using a Single Graphics Processing Unit