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    Journals >Acta Optica Sinica >Volume 42 >Issue 3 >Page 0327017 > Article
    • Acta Optica Sinica
    • Vol. 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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    DOI: 10.3788/AOS202242.0327017 Cite this Article Set citation alerts
    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 Copy Citation Text show less
    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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    Distance /kmμνo
    10.00.260.0250
    20.00.250.0240
    50.40.240.0230
    Table 1. Intensity of decoy state
    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 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>
    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 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>
    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 4. Successful event response rate measured experimentally at 50.4 km communication distance
    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 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>
    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 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>
    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 7. Upper and lower bound of responsivity of single photon pair at 50.4 km communication distance under different coding states
    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
    Table 8. Important intermediate variables
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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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