Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Smart innovation, systems and technologies

Improved Parity-Based Error Estimation Scheme in Quantum Key Distribution

Haokun Mao, Qiong Li

Published Jul 10, 2019• 1 citation
Publisher
DOI
10.1007/978-981-13-9710-3_40

Related papers

Analytical Research on Error Rate of Quantum Key Distribution

ZHOU Yanjie -, WEN Min -

International Journal of Digital Content Technology and its Applications•Feb 13, 2013•0 citations

Efficient error estimation in quantum key distribution

Mo Li, Patcharapong Treeviriyanupab, Chunmei Zhang +3 more

In a quantum key distribution (QKD) system, the error rate needs to be estimated for determining the joint probability distribution between legitimate parties, and for improving the performance of key reconciliation. We propose an efficient error estimation scheme for QKD, which is called parity comparison method (PCM). In the proposed method, the parity of a group of sifted keys is practically analysed to estimate the quantum bit error rate instead of using the traditional key sampling. From the simulation results, the proposed method evidently improves the accuracy and decreases revealed information in most realistic application situations.

Chinese Physics B•Jan 1, 2015•14 citations

Improved Parameter Estimation Methods in the Post-Processing Phase of Quantum Key Distribution

Chuyang Zhong, Yucheng Qiao, Weigang Li +1 more

In the post-processing phase of Quantum Key Distribution (QKD), a crucial step involves the parameter estimation of the initial key. Among various techniques, the group parity check method stands out as a prevalent approach for parameter estimation. This method operates by segmenting the received key into groups and applying parity checks within each group to estimate the bit error rate. Theoretically, this method can achieve high precision estimation with minimal information leakage compared to traditional random sampling methods. However, the practical efficiency and estimation accuracy of this method are contingent upon the group size and the statistical properties of the errors, which sometimes may not yield superior results relative to conventional methods. This paper introduces an enhanced group parity check method, which incorporates an additional parity code comparison and employs a dynamic group strategy, effectively reducing information leakage in subsequent error correction steps caused by erroneous estimations. Experimental results demonstrate that the proposed parameter estimation method can more accurately estimate and correct errors occurring during the QKD physical process and dynamically optimize the key generation process according to actual communication conditions.

International Symposium on Computer Applications and Information Systems (ISCAIS)•Mar 21, 2025•0 citations

Error Estimation at the Information Reconciliation Stage of Quantum Key Distribution

Evgeniy O. Kiktenko, Aleksei Malyshev, A. A. Bozhedarov +3 more

arXiv:1810.05841•Journal of Russian Laser Research•Nov 1, 2018•22 citations

Rate-adaptive reconciliation and its estimator for quantum bit error rate

Patcharapong Treeviriyanupab, Tharathorn Phromsa‐ard, Chun-Mei Zhang +10 more

The purpose of reconciliation, one of classical aspects of quantum key distribution (QKD) protocol, is to mitigate errors after the distribution of quantum information over a quantum channel. In this paper, a rate-adaptive method is proposed by means of a channel coding scheme where specific low-density parity-check (LDPC) codes are adapted in the Slepian-Wolf coding system. Puncturing and shortening techniques are adopted to optimize their coding rates with all possible cases of error in QKD. This successful method utilizes the knowledge of the quantum bit error rate (QBER) based on the maximum-likelihood estimator with respect to the syndrome information. Its benefit is that avoids wasting sample keys in the traditional channel estimation and thus increases the size of the final secret key. Evidently, simulation results confirm an improvement in the reconciliation efficiency with minimal interaction that suitable for high QKD throughput applications.

International Symposium on Communications and Information Technologies•Sep 1, 2014•12 citations

Error Detection and Authentication in Quantum Key Distribution

Akihiro Yamamura, Hirokazu Ishizuka

Lecture notes in computer science•Jan 1, 2001•14 citations
In a quantum key distribution (QKD) system, the error rate needs to be estimated for determining the joint probability distribution between legitimate parties, and for improving the performance of key reconciliation. We propose an efficient error estimation scheme for QKD, which is called parity comparison method (PCM). In the proposed method, the parity of a group of sifted keys is practically analysed to estimate the quantum bit error rate instead of using the traditional key sampling. From the simulation results, the proposed method evidently improves the accuracy and decreases revealed information in most realistic application situations.
In the post-processing phase of Quantum Key Distribution (QKD), a crucial step involves the parameter estimation of the initial key. Among various techniques, the group parity check method stands out as a prevalent approach for parameter estimation. This method operates by segmenting the received key into groups and applying parity checks within each group to estimate the bit error rate. Theoretically, this method can achieve high precision estimation with minimal information leakage compared to traditional random sampling methods. However, the practical efficiency and estimation accuracy of this method are contingent upon the group size and the statistical properties of the errors, which sometimes may not yield superior results relative to conventional methods. This paper introduces an enhanced group parity check method, which incorporates an additional parity code comparison and employs a dynamic group strategy, effectively reducing information leakage in subsequent error correction steps caused by erroneous estimations. Experimental results demonstrate that the proposed parameter estimation method can more accurately estimate and correct errors occurring during the QKD physical process and dynamically optimize the key generation process according to actual communication conditions.
The purpose of reconciliation, one of classical aspects of quantum key distribution (QKD) protocol, is to mitigate errors after the distribution of quantum information over a quantum channel. In this paper, a rate-adaptive method is proposed by means of a channel coding scheme where specific low-density parity-check (LDPC) codes are adapted in the Slepian-Wolf coding system. Puncturing and shortening techniques are adopted to optimize their coding rates with all possible cases of error in QKD. This successful method utilizes the knowledge of the quantum bit error rate (QBER) based on the maximum-likelihood estimator with respect to the syndrome information. Its benefit is that avoids wasting sample keys in the traditional channel estimation and thus increases the size of the final secret key. Evidently, simulation results confirm an improvement in the reconciliation efficiency with minimal interaction that suitable for high QKD throughput applications.