Design of a high-repetition rate photon source in a quantum key distribution system

Photon source with high-repetition quantum message transmission is needed in the quantum key distribution （QKD） system for long distance and high-repetition rate. We design high-repetition-rate weak coherent light by applying a practical QKD system with decoy states and polarization coding including...

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Bibliographic Details
Published in:Science China. Information sciences Vol. 56; no. 9; pp. 277 - 283
Main Authors: Wang, Jian, Cui, Ke, Luo, ChunLi, Zhang, HongFei, Zhou, Lei, Chen, TengYun, Liang, Hao, Jin, Ge
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2013
Springer Nature B.V
Subjects:
China
Coding
Coherent light
Computer Science
Design engineering
Information Systems and Communication Service
Modulation
Photons
Polarization
Pulse amplitude
Pulse duration
Pulse width
Quantum cryptography
Random numbers
Repetition
Research Paper
偏振编码
光子源
分配系统
真随机数发生器
设计
量子信息传输
量子密钥分配
高重复率
quantum transmission
quantum key distribution
true random generator
laser driver
narrow-pulse shaping
ISSN:1674-733X, 1869-1919
Online Access:Get full text
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Summary:Photon source with high-repetition quantum message transmission is needed in the quantum key distribution （QKD） system for long distance and high-repetition rate. We design high-repetition-rate weak coherent light by applying a practical QKD system with decoy states and polarization coding including an FPGA-based true random number generator, narrow pulse shaping under the modulation of high-speed true random number as well as its laser driver. The test indicates that the repetition rate of such light can attain a high performance of 650 MHz, pulse width less than 300 ps, stability of pulse amplitude better than 5%, and extinction rate better than 1000：1.
Bibliography:quantum key distribution; quantum transmission; true random generator; narrow-pulse shaping; laser driver
WANG Jian, CUI Ke, LUO ChunLi, ZHANG HongFei, ZHOU Lei, CHEN TengYun, LIANG Hao ＆ JIN Ge Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
11-5847/TP
Photon source with high-repetition quantum message transmission is needed in the quantum key distribution （QKD） system for long distance and high-repetition rate. We design high-repetition-rate weak coherent light by applying a practical QKD system with decoy states and polarization coding including an FPGA-based true random number generator, narrow pulse shaping under the modulation of high-speed true random number as well as its laser driver. The test indicates that the repetition rate of such light can attain a high performance of 650 MHz, pulse width less than 300 ps, stability of pulse amplitude better than 5%, and extinction rate better than 1000：1.
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ISSN:1674-733X
1869-1919
DOI:10.1007/s11432-012-4671-y