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Quantum Key Distribution Control System and Phase Modulator Drive Module Design
LI linxia * #
School of Science,Beijing University of Posts and Telecommunications, Beijing 100876, China
*Correspondence author
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Funding: none
Opened online:23 November 2009
Accepted by: none
Citation: LI linxia.Quantum Key Distribution Control System and Phase Modulator Drive Module Design[OL]. [23 November 2009] http://en.paper.edu.cn/en_releasepaper/content/36937
 
 
Recent progress in quantum key distribution (QKD) is briefly reviewed and a control circuit for driving phase modulator is presented using high-speed and high frequency analog switch. Phase modulator is an indispensable optical modulator in quantum key distribution as it can affect the quantum bit error rate. Simulation results show that the output voltage pulse width can be less than 10ns,which can be well applied to quantum key distribution system. The feasibility and reliability of the scheme are verified through theoretical analysis and experiment results.
Keywords:QKD;control system;phase modulator;analog-switch
 
 
 

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