Multimatrix rate-compatible reconciliation for quantum key distribution

Gao, Chaohui; Guo, Yu; Jiang, Dong; Liu, Jia; Chen, Lijun

doi:10.1103/physreva.102.022604

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…One of the simplest rate-compatible methods for LDPC code is to operate on single-matrix using puncturing, shortening and extending. Furthermore, Gao proposed multi-matrix rate-compatible reconciliation where, in each iteration, multiple matrices produce more useful information to correct errors such that the iteration number falls and the convergence speed increases [ 15 ]. However, it inevitably decreases the performance of the original check matrix.…”

Section: Introductionmentioning

confidence: 99%

Rate-Compatible LDPC Codes for Continuous-Variable Quantum Key Distribution in Wide Range of SNRs Regime

Fan

Niu

Zhao

et al. 2022

Entropy

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Long block length rate-compatible low-density parity-compatible (LDPC) codes are designed to solve the problems of great variation of quantum channel noise and extremely low signal-to-noise ratio in continuous-variable quantum key distribution (CV-QKD). The existing rate-compatible methods for CV-QKD inevitably cost abundant hardware resources and waste secret key resources. In this paper, we propose a design rule of rate-compatible LDPC codes that can cover all potential SNRs with single check matrix. Based on this long block length LDPC code, we achieve high efficiency continuous-variable quantum key distribution information reconciliation with a reconciliation efficiency of 91.80% and we have higher hardware processing efficiency and lower frame error rate than other schemes. Our proposed LDPC code can obtain a high practical secret key rate and a long transmission distance in an extremely unstable channel.

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Section: Introductionmentioning

confidence: 99%

Rate-Compatible LDPC Codes for Continuous-Variable Quantum Key Distribution in Wide Range of SNRs Regime

Fan

Niu

Zhao

et al. 2022

Entropy

View full text Add to dashboard Cite

show abstract

Development of Video Encryption Scheme Based on Quantum Controlled Dense Coding Using GHZ State for Smart Home Scenario

Zhang

et al. 2021

Wireless Pers Commun

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Error Reconciliation based on Integer Linear Programming in Quantum Key Distribution

Eskandari¹,

Mohammad²

2021

jist

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Quantum telecommunication has received a lot of attention today by providing unconditional security because of the inherent nature of quantum channels based on the no-cloning theorem. In this mode of communication, first, the key is sent through a quantum channel that is resistant to eavesdropping, and then secure communication is established using the exchanged key. Due to the inevitability of noise, the received key needs to be distilled. One of the vital steps in key distillation is named key reconciliation which corrects the occurred errors in the key. Different solutions have been presented for this issue, with different efficiency and success rate. One of the most notable works is LDPC decoding which has higher efficiency compared to the others, but unfortunately, this method does not work well in the codes with a high rate. In this paper, we present an approach to correct the errors in the high rate LDPC code-based reconciliation algorithm. The proposed algorithm utilizes Integer Linear Programming to model the error correction problem to an optimization problem and solve it. Testing the proposed approach through simulation, we show it has high efficiency in high rate LDPC codes as well as a higher success rate compared with the LDPC decoding method -belief propagationin a reasonable time.

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Multimatrix rate-compatible reconciliation for quantum key distribution

Cited by 3 publications

References 33 publications

Rate-Compatible LDPC Codes for Continuous-Variable Quantum Key Distribution in Wide Range of SNRs Regime

Rate-Compatible LDPC Codes for Continuous-Variable Quantum Key Distribution in Wide Range of SNRs Regime

Development of Video Encryption Scheme Based on Quantum Controlled Dense Coding Using GHZ State for Smart Home Scenario

Error Reconciliation based on Integer Linear Programming in Quantum Key Distribution

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