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Acta Optica Sinica, Volume. 42, Issue 3, 0327017(2022)

Uncharacterized-Source Measurement-Device-Independent Quantum Key Distribution Experiment with over 50 km fiber

Fengyu Lu1,2,3, Zhenqiang Yin1,2,3、*, Shang Wang1,2,3、**, Zehao Wang1,2,3, Wei Chen1,2,3, Guangcan Guo1,2,3, and Zhenfu Han1,2,3
Author Affiliations
  • 1CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 2CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 3State Key Laboratory of Cryptology, P. O. Box 5159, Beijing 100878, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
    Equations (0)
    References (37)
    Cited By (2)
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    Paper Information
    Topics
    Figures & Tables(10)
    Experimental setup for uncharacterized-source MDI-QKD

    Fig. 1. Experimental setup for uncharacterized-source MDI-QKD

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    Relationship between communication distance and security key rate

    Fig. 2. Relationship between communication distance and security key rate

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    • Table 1. Intensity of decoy state

      View table

      Table 1. Intensity of decoy state

      Distance /kmμνo
      10.00.260.0250
      20.00.250.0240
      50.40.240.0230

    • Table 2. Successful event response rate measured experimentally at 10.0 km communication distance

      View table

      Table 2. Successful event response rate measured experimentally at 10.0 km communication distance

      Qnm(lr)|0>|0>|0>|1>|0>|2>|1>|0>|1>|1>|1>|2>|2>|0>|2>|1>|2>|2>
      μμ5.02×10-63.83×10-43.03×10-43.91×10-44.20×10-63.07×10-43.05×10-43.13×10-41.91×10-4
      νν6.92×10-84.42×10-63.28×10-64.11×10-66.40×10-82.94×10-63.10×10-62.98×10-62.14×10-6
      μo5.60×10-85.60×10-85.60×10-86.20×10-86.20×10-86.20×10-81.02×10-41.02×10-41.02×10-4
      oμ5.94×10-86.26×10-81.04×10-45.94×10-86.26×10-81.04×10-45.94×10-86.26×10-81.04×10-4
      νo6.12×10-96.12×10-96.12×10-95.46×10-95.46×10-95.46×10-91.09×10-61.09×10-61.09×10-6
      oν5.72×10-96.48×10-91.07×10-65.72×10-96.48×10-91.07×10-65.72×10-96.48×10-91.07×10-6

    • Table 3. Successful event response rate measured experimentally at 20.0 km communication distance

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      Table 3. Successful event response rate measured experimentally at 20.0 km communication distance

      Qnm(lr)|0>|0>|0>|1>|0>|2>|1>|0>|1>|1>|1>|2>|2>|0>|2>|1>|2>|2>
      μμ3.06×10-62.50×10-41.74×10-42.52×10-42.76×10-61.94×10-41.98×10-41.82×10-41.18×10-4
      νν3.80×10-82.32×10-61.84×10-62.96×10-63.72×10-82.21×10-61.96×10-61.82×10-61.34×10-6
      μo4.86×10-84.86×10-84.86×10-84.74×10-84.74×10-84.74×10-85.79×10-55.79×10-55.79×10-5
      oμ4.88×10-84.50×10-86.58×10-54.88×10-84.50×10-86.58×10-54.88×10-84.50×10-86.58×10-5
      νo4.46×10-94.46×10-94.46×10-94.16×10-94.16×10-94.16×10-97.38×10-77.38×10-77.38×10-7
      oν5.48×10-94.76×10-95.49×10-75.48×10-94.76×10-95.49×10-75.48×10-94.76×10-95.49×10-7

    • Table 4. Successful event response rate measured experimentally at 50.4 km communication distance

      View table

      Table 4. Successful event response rate measured experimentally at 50.4 km communication distance

      Qnm(lr)|0>|0>|0>|1>|0>|2>|1>|0>|1>|1>|1>|2>|2>|0>|2>|1>|2>|2>
      μμ7.56×10-75.80×10-54.76×10-56.21×10-57.71×10-74.66×10-54.32×10-54.79×10-52.71×10-5
      νν1.08×10-84.92×10-74.26×10-73.72×10-71.22×10-84.41×10-74.33×10-74.52×10-72.98×10-7
      μo2.40×10-82.40×10-82.40×10-82.48×10-82.48×10-82.48×10-81.44×10-51.44×10-51.44×10-5
      oμ2.04×10-82.16×10-81.41×10-52.04×10-82.16×10-81.41×10-52.04×10-82.16×10-81.41×10-5
      νo3.20×10-93.20×10-93.20×10-92.00×10-92.00×10-92.00×10-91.51×10-71.51×10-71.51×10-7
      oν3.60×10-92.40×10-91.51×10-73.60×10-92.40×10-91.51×10-73.60×10-92.40×10-91.51×10-7

    • Table 5. Upper and lower bound of responsivity of single photon pair at 10.0 km communication distance under different coding states

      View table

      Table 5. Upper and lower bound of responsivity of single photon pair at 10.0 km communication distance under different coding states

      Ynm|0>|0>|0>|1>|0>|2>|1>|0>|1>|1>|1>|2>|2>|0>|2>|1>|2>|2>
      LB8.98×10-56.84×10-33.19×10-36.27×10-38.25×10-52.58×10-32.13×10-31.90×10-30
      UB9.30×10-57.11×10-33.42×10-36.61×10-38.44×10-52.88×10-32.47×10-32.28×10-35.56×10-5

    • Table 6. Upper and lower bound of responsivity of single photon pair at 20.0 km communication distance under different coding states

      View table

      Table 6. Upper and lower bound of responsivity of single photon pair at 20.0 km communication distance under different coding states

      Ynm|0>|0>|0>|1>|0>|2>|1>|0>|1>|1>|1>|2>|2>|0>|2>|1>|2>|2>
      LB4.71×10-53.83×10-32.20×10-35.07×10-34.83×10-52.87×10-31.99×10-31.76×10-31.04×10-4
      UB5.00×10-54.08×10-32.30×10-35.21×10-35.03×10-52.95×10-32.18×10-31.93×10-31.48×10-4

    • Table 7. Upper and lower bound of responsivity of single photon pair at 50.4 km communication distance under different coding states

      View table

      Table 7. Upper and lower bound of responsivity of single photon pair at 50.4 km communication distance under different coding states

      Ynm|0>|0>|0>|1>|0>|2>|1>|0>|1>|1>|1>|2>|2>|0>|2>|1>|2>|2>
      LB6.97×10-68.92×10-44.97×10-46.18×10-41.51×10-55.32×10-45.22×10-45.52×10-40
      UB8.24×10-69.63×10-45.45×10-47.26×10-41.57×10-55.77×10-45.58×10-45.98×10-45.69×10-6

    • Table 8. Important intermediate variables

      View table

      Table 8. Important intermediate variables

      Distance /kmY-ZZ/10-4epQZZ(μμ')/10-5EZZ(μμ') /%R /10-6
      10.033.200.20319.61.1715.40
      20.022.500.2141.271.148.54
      50.43.830.1503.041.261.91
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    Fengyu Lu, Zhenqiang Yin, Shang Wang, Zehao Wang, Wei Chen, Guangcan Guo, Zhenfu Han. Uncharacterized-Source Measurement-Device-Independent Quantum Key Distribution Experiment with over 50 km fiber[J]. Acta Optica Sinica, 2022, 42(3): 0327017

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    Paper Information

    Category: Quantum Optics

    Received: Jul. 6, 2021

    Accepted: Aug. 31, 2021

    Published Online: Jan. 26, 2022

    The Author Email: Yin Zhenqiang (yinzq@ustc.edu.cn), Wang Shang (wshuang@ustc.edu.cn)

    DOI:10.3788/AOS202242.0327017

    Topics

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