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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于BBM92协议的量子密钥分发系统改进方案
, PP. 560-564
Keywords: 量子光学,量子密钥分发,双探测器,BBM92协议,密钥生成率
Abstract:
目前量子密钥分发所面临的最主要问题是如何实现高码率、远距离的量子密钥传输。为提高量子保密通信系统量子密钥生成的速率，将双探测器量子密钥分发方案应用于BBM92协议，并分别在理想纠缠光源，和参量下转换纠缠光源两种情况下进行了数值仿真。对系统性能进行对比后得出在BBM92协议中利用双探测器，量子密钥分发系统的密钥生成率明显高于单探测器系统，而误码率大幅度低于单探测器系统。理想光源情况下传输距离可扩展到300km，参量下转换光源的情况下，传输距离也可达250km。
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