Error Estimation at the Information Reconciliation Stage of Quantum Key Distribution |
| |
| Authors: | E O Kiktenko A O Malyshev A A Bozhedarov N O Pozhar M N Anufriev A K Fedorov |
| |
| Institution: | 1.Russian Quantum Center,Moscow,Russia;2.Steklov Mathematical Institute of the Russian Academy of Sciences,Moscow,Russia;3.Geoelectromagnetic Research Centre of Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences,Moscow,Russia;4.Moscow Institute of Physics and Technology,Dolgoprudny,Russia;5.Institute for Information Transmission Problems of the Russian Academy of Sciences,Moscow,Russia;6.Skolkovo Institute of Science and Technology,Moscow,Russia |
| |
| Abstract: | Quantum key distribution (QKD) offers a practical solution for secure communication between two distinct parties via a quantum channel and an authentic public channel. In this work, we consider different approaches to the quantum bit error rate (QBER) estimation at the information reconciliation stage of the post-processing procedure. For reconciliation schemes employing low-density parity-check (LDPC) codes, we develop a novel syndrome-based QBER estimation algorithm. The algorithm suggested is suitable for irregular LDPC codes and takes into account punctured and shortened bits. Testing our approach in a real QKD setup, we show that an approach combining the proposed algorithm with conventional QBER estimation techniques allows one to improve the accuracy of the QBER estimation. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
