The implementation of Shannon-limited polar codes-based information reconciliation for quantum key distribution

Guo, Junbin1,2; Tang, Bangying3; Lai, Tingqin1,2; Liang, Xiaolin1,2; Zhang, Siyuan1,2; Tian, Zhiyu1,2; Huang, Jinquan1,2; Yuan, Xuelin1,2; Yu, Wanrong3; Liu, Bo4; Luo, Shaobo5; Sun, Shihai1,2

2023-07-01

10.1088/2058-9565/acd0d1

QUANTUM SCIENCE AND TECHNOLOGY   影响因子和分区

2058-9565

Quantum key distribution (QKD) gives a way to generate unconditionally secure keys for two remote users, Alice and Bob. Information reconciliation (IR), which can correct the errors caused by the imperfections of the QKD systems, is a critical component in QKD. Due to the high-security requirements and large volumes of data processing, robustness and efficiency are two main factors that must be considered for the implementation of IR. The polar codes-based IR has several potential advantages, such as capacity to reach Shannon-limit, high IR efficiency, and low computational complexity. Although CPU-based IR is always implemented in most of the previous works, it is not the optimal implementation in terms of performance and power dissipation. To the best of our knowledge, there is still no work to build a special-purpose hardware module for polar codes-based IR. In this paper, a dedicated design of hardware accelerator is first proposed for polar codes-based IR, in which the block-checked successive cancellation list (SCL) algorithm is used to verify the consistency of the sifted keys, and the overall failure probability of IR is significantly reduced. The proposed design is constructed into a partially-unrolled parallel architecture to accelerate the core decoder as well as balance the resource utilization. Furthermore, the hardware implementation is completed based on Xilinx Zynq UltraScale+ XCZU5EV MPSoC platform and achieves an IR throughput of 15 Mbps with a block length of 2(12), while less than 20% of the amount of on-chip resources are used in other previous designs of SCL decoder. The proposed design can provide a real-time, low-cost solution for IR in QKD systems, and enhance the performance of QKD.

field programmable gate array (FPGA) information reconciliation (IR) polar code quantum key distribution (QKD)

SCI ; EI

英语

通讯

National Natural Science Foundation of China["62171485","61972410"] ; Shenzhen Science and Technology Program[JCYJ20220818102014029] ; Research Plan of National University of Defense Technology["ZK19-13","19-QNCXJ-107"]

Physics

Quantum Science & Technology ; Physics, Multidisciplinary

WOS:000984257800001

IOP Publishing Ltd

20232014086089

Computational efficiency ; Data handling ; Decoding ; Field programmable gate arrays (FPGA) ; Integrated circuit design ; Parallel architectures ; Real time systems

Semiconductor Devices and Integrated Circuits:714.2 ; Logic Elements:721.2 ; Digital Computers and Systems:722.4 ; Data Processing and Image Processing:723.2

Web of Science

1.Sun Yat Sen Univ, Sch Elect & Commun Engn, Shenzhen 518107, Guangdong, Peoples R China
2.Sun Yat sen Univ, Shenzhen Campus,66 Gongchang Rd, Shenzhen 518107, Guangdong, Peoples R China
3.Natl Univ Def Technol, Coll Comp, Changsha 410073, Peoples R China
4.Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Peoples R China
5.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Guangdong, Peoples R China

Guo, Junbin,Tang, Bangying,Lai, Tingqin,et al. The implementation of Shannon-limited polar codes-based information reconciliation for quantum key distribution[J]. QUANTUM SCIENCE AND TECHNOLOGY,2023,8(3).

Guo, Junbin.,Tang, Bangying.,Lai, Tingqin.,Liang, Xiaolin.,Zhang, Siyuan.,...&Sun, Shihai.(2023).The implementation of Shannon-limited polar codes-based information reconciliation for quantum key distribution.QUANTUM SCIENCE AND TECHNOLOGY,8(3).

Guo, Junbin,et al."The implementation of Shannon-limited polar codes-based information reconciliation for quantum key distribution".QUANTUM SCIENCE AND TECHNOLOGY 8.3(2023).