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Acta Optica Sinica, Volume. 39, Issue 5, 0527001(2019)

Multidimensional Reconciliation for Continuous-Variable Quantum Key Distribution Based on Two-Edge Type Low-Density Parity-Check Codes

Shitu Ma, Dabo Guo*, Zhe Xue, and Chao He
Author Affiliations
  • College of Physics and Electronic Engineering, Shanxi University, Taiyuan, Shanxi 030006, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
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    Cited By (4)
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    Figures & Tables(10)
    Spheroidization and rotation of continuous variable states

    Fig. 1. Spheroidization and rotation of continuous variable states

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    Schematic of multidimensional data reconciliation

    Fig. 2. Schematic of multidimensional data reconciliation

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    Schematic of tree expansion

    Fig. 3. Schematic of tree expansion

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    Tanner diagram of (3,7) Hamming code

    Fig. 4. Tanner diagram of (3,7) Hamming code

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    Tanner diagram of (3,1) repeat accumulate (RA) code

    Fig. 5. Tanner diagram of (3,1) repeat accumulate (RA) code

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    Tanner diagram of TET-LDPC with code rate of 0.5

    Fig. 6. Tanner diagram of TET-LDPC with code rate of 0.5

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    EXIT diagrams of TET-LDPC and LDPC. (a) EXIT diagram of TET-LDPC with code rate of 0.5 under additive white Gaussian noise (AWGN); (b) EXIT diagram of LDPC with code rate of 0.5 under AWGN

    Fig. 7. EXIT diagrams of TET-LDPC and LDPC. (a) EXIT diagram of TET-LDPC with code rate of 0.5 under additive white Gaussian noise (AWGN); (b) EXIT diagram of LDPC with code rate of 0.5 under AWGN

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    Construction process of TET-LDPC check matrix

    Fig. 8. Construction process of TET-LDPC check matrix

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    • Table 1. Simulation results of eight-dimensional data reconciliation[16]

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      Table 1. Simulation results of eight-dimensional data reconciliation[16]

      LengthRsn /dBAve-interPer⁃time /sSpeed /(kb·s-1)β /%Rate⁃bit /(kb·s-1)Distance /km
      1031.9037.40.020748.3165.10-64.0940.50
      1041.4039.10.276436.1879.17-29.7643.00
      1051.3043.14.329823.1083.22-19.8743.50
      2×1051.2053.613.80914.4887.91-8.4244.00

    • Table 2. Simulation results of eight-dimensional data reconciliation based on TET-LDPC

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      Table 2. Simulation results of eight-dimensional data reconciliation based on TET-LDPC

      LengthRsn /dBAve-interPer⁃time /sSpeed /(kb·s-1)β /%Rate⁃bit /(kb·s-1)Distance /km
      1031.6020.20.014867.5772.54-45.9342.00
      1041.2140.00.264637.7987.41-9.6543.95
      1051.0761.04.280723.3695.279.5444.65
      2×1051.0277.811.95516.7398.5817.6144.90
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    Shitu Ma, Dabo Guo, Zhe Xue, Chao He. Multidimensional Reconciliation for Continuous-Variable Quantum Key Distribution Based on Two-Edge Type Low-Density Parity-Check Codes[J]. Acta Optica Sinica, 2019, 39(5): 0527001

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    Paper Information

    Category: Quantum Optics

    Received: Dec. 12, 2018

    Accepted: Jan. 23, 2019

    Published Online: May. 10, 2019

    The Author Email:

    DOI:10.3788/AOS201939.0527001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology