Improved Parity-Based Error Estimation Scheme in Quantum Key Distribution

  • Haokun Mao
  • Qiong LiEmail author
Conference paper
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 157)


Quantum Key Distribution (QKD) is a promising technique to distribute unconditional secure keys for the remote two parties. In order to improve the final secure key rate of a QKD system, the Quantum Bit Error Rate (QBER) needs to be estimated as accurate as possible with minimum information leakage. In this paper, an improved parity-based error estimation scheme is proposed. The core part of the scheme is the proposed optimal block length calculation method. Simulation results show that the proposed scheme improves the accuracy of QBER estimation with less information leakage.


Quantum key distribution Error estimation Parity 



This work is supported by the Space Science and Technology Advance Research Joint Funds (6141B06110105) and the National Natural Science Foundation of China (Grant Number: 61771168).


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Information Countermeasure Technique InstituteSchool of Computer Science and Technology, Harbin Institute of TechnologyHarbinChina

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