High-efficiency reconciliation for continuous variable quantum key distribution

被引：30

作者：

Bai, Zengliang ^{[1
,2
]}

Yang, Shenshen ^{[1
,2
]}

Li, Yongmin ^{[1
,2
]}

机构：

[1] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China

[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2017年 / 56卷 / 04期

基金：

中国国家自然科学基金;

关键词：

PARITY-CHECK CODES; INFORMATION; SECURITY; DESIGN;

D O I：

10.7567/JJAP.56.044401

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Quantum key distribution (QKD) is the most mature application of quantum information technology. Information reconciliation is a crucial step in QKD and significantly affects the final secret key rates shared between two legitimate parties. We analyze and compare various construction methods of low-density parity-check (LDPC) codes and design high-performance irregular LDPC codes with a block length of 10(6). Starting from these good codes and exploiting the slice reconciliation technique based on multilevel coding and multistage decoding, we realize high-efficiency Gaussian key reconciliation with efficiency higher than 95% for signal-to-noise ratios above 1. Our demonstrated method can be readily applied in continuous variable QKD. (C) 2017 The Japan Society of Applied Physics

引用

页数：5

共 39 条

[1]

[Anonymous], 1984, P IEEE INT C COMP, DOI DOI 10.1016/J.TCS.2014.05.025

[2] High-efficiency Gaussian key reconciliation in continuous variable quantum key distribution [J].

Bai, ZengLiang ;

Wang, XuYang ;

Yang, ShenShen ;

Li, YongMin .

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2016, 59 (01) :1-5

[3] LDPC-based Gaussian key reconciliation [J].

Bloch, Matthieu ;

Thangaraj, Andrew ;

McLaughlin, Steven W. ;

Merolla, Jean-Marc .

2006 IEEE INFORMATION THEORY WORKSHOP, 2006, :116-+

[4] Quantum information with continuous variables [J].

Braunstein, SL ;

van Loock, P .

REVIEWS OF MODERN PHYSICS, 2005, 77 (02) :513-577

[5] On the design of low-density parity-check codes within 0.0045 dB of the Shannon limit [J].

Chung, SY ;

Forney, GD ;

Richardson, TJ ;

Urbanke, R .

IEEE COMMUNICATIONS LETTERS, 2001, 5 (02) :58-60

[6] Distributing Secret Keys with Quantum Continuous Variables: Principle, Security and Implementations [J].

Diamanti, Eleni ;

Leverrier, Anthony .

ENTROPY, 2015, 17 (09) :6072-6092

[7] Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks [J].

Furrer, F. ;

Franz, T. ;

Berta, M. ;

Leverrier, A. ;

Scholz, V. B. ;

Tomamichel, M. ;

Werner, R. F. .

PHYSICAL REVIEW LETTERS, 2012, 109 (10)

[8] Reverse-reconciliation continuous-variable quantum key distribution based on the uncertainty principle [J].

Furrer, Fabian .

PHYSICAL REVIEW A, 2014, 90 (04)

[9] Quantum cryptography [J].

Gisin, N ;

Ribordy, GG ;

Tittel, W ;

Zbinden, H .

REVIEWS OF MODERN PHYSICS, 2002, 74 (01) :145-195

[10] Quantum key distribution using gaussian-modulated coherent states [J].

Grosshans, F ;

Van Assche, G ;

Wenger, J ;

Brouri, R ;

Cerf, NJ ;

Grangier, P .

NATURE, 2003, 421 (6920) :238-241

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