Stable long-distance quantum key distribution system

Guang Wu; Chun Yuan Zhou; Xiu Liang Chen; Xiao Hong Han; He Ping Zeng

doi:10.7498/aps.54.3622

Stable long-distance quantum key distribution system

Guang Wu
, Chun Yuan Zhou
, Xiu Liang Chen
, Xiao Hong Han
, He Ping Zeng^*

^*Corresponding author for this work

East China Normal University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A stable long-distance quantum key distribution system which has been just completed in our laboratory is demonstrated in this paper. The idea of 'plug and play' was adopted to automatically compensate the polarization mode dispersion and phase shift. A symmetrical capacitance-balance technique and magic-T network were used in the single-photon detection module, wherein a detection efficiency of more than 5% and a dark count probability of lower than 2.9 × 10^-6/pulse were achieved. As a result, we have realized stable (longer than 12 h) quantum key distribution experiment in 50.6 km single mode fiber with mean photon number of 0.07 and quantum bit error rate of 4%.

Original language	English
Pages (from-to)	3622-3626
Number of pages	5
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	54
Issue number	8
DOIs	https://doi.org/10.7498/aps.54.3622
State	Published - Aug 2005
Externally published	Yes

Keywords

Quantum cryptography
Quantum key distribution
Single-photon detection

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10.7498/aps.54.3622

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title = "Stable long-distance quantum key distribution system",

abstract = "A stable long-distance quantum key distribution system which has been just completed in our laboratory is demonstrated in this paper. The idea of 'plug and play' was adopted to automatically compensate the polarization mode dispersion and phase shift. A symmetrical capacitance-balance technique and magic-T network were used in the single-photon detection module, wherein a detection efficiency of more than 5\% and a dark count probability of lower than 2.9 × 10-6/pulse were achieved. As a result, we have realized stable (longer than 12 h) quantum key distribution experiment in 50.6 km single mode fiber with mean photon number of 0.07 and quantum bit error rate of 4\%.",

keywords = "Quantum cryptography, Quantum key distribution, Single-photon detection",

author = "Guang Wu and Zhou, \{Chun Yuan\} and Chen, \{Xiu Liang\} and Han, \{Xiao Hong\} and Zeng, \{He Ping\}",

year = "2005",

month = aug,

doi = "10.7498/aps.54.3622",

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volume = "54",

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T1 - Stable long-distance quantum key distribution system

AU - Wu, Guang

AU - Zhou, Chun Yuan

AU - Chen, Xiu Liang

AU - Han, Xiao Hong

AU - Zeng, He Ping

PY - 2005/8

Y1 - 2005/8

N2 - A stable long-distance quantum key distribution system which has been just completed in our laboratory is demonstrated in this paper. The idea of 'plug and play' was adopted to automatically compensate the polarization mode dispersion and phase shift. A symmetrical capacitance-balance technique and magic-T network were used in the single-photon detection module, wherein a detection efficiency of more than 5% and a dark count probability of lower than 2.9 × 10-6/pulse were achieved. As a result, we have realized stable (longer than 12 h) quantum key distribution experiment in 50.6 km single mode fiber with mean photon number of 0.07 and quantum bit error rate of 4%.

AB - A stable long-distance quantum key distribution system which has been just completed in our laboratory is demonstrated in this paper. The idea of 'plug and play' was adopted to automatically compensate the polarization mode dispersion and phase shift. A symmetrical capacitance-balance technique and magic-T network were used in the single-photon detection module, wherein a detection efficiency of more than 5% and a dark count probability of lower than 2.9 × 10-6/pulse were achieved. As a result, we have realized stable (longer than 12 h) quantum key distribution experiment in 50.6 km single mode fiber with mean photon number of 0.07 and quantum bit error rate of 4%.

KW - Quantum cryptography

KW - Quantum key distribution

KW - Single-photon detection

UR - https://www.scopus.com/pages/publications/23444443856

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JO - Wuli Xuebao/Acta Physica Sinica

JF - Wuli Xuebao/Acta Physica Sinica

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ER -

Stable long-distance quantum key distribution system

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Keywords

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