Analysis of detector performance in a gigahertz clock rate quantum key distribution system
Analysis of detector performance in a gigahertz clock rate quantum key distribution system
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DOI：
10.1088/1367-2630/13/7/075008
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发表时间：
2011-07-22
影响因子：
3.3
通讯作者：
Buller, Gerald S.
中科院分区：
文献类型：
--
作者：
Clarke, Patrick J.;Collins, Robert J.;Buller, Gerald S.
我们利用几种不同的单光子探测器，包括首次实现实验性谐振腔薄结硅单光子雪崩二极管，对千兆赫时钟速率环境鲁棒的相位编码量子密钥分配（QKD）系统进行了详细分析。该系统使用标准电信光纤，工作波长为 850 nm。在对该系统中实际探测器的发展进行预测之前，参考这些实验结果提出了 QKD 系统性能的通用理论模型。我们参考理论模型讨论如何进一步优化探测器操作参数以最大化关键交换率。
We present a detailed analysis of a gigahertz clock rate environmentally robust phase-encoded quantum key distribution (QKD) system utilizing several different single-photon detectors, including the first implementation of an experimental resonant cavity thin-junction silicon single-photon avalanche diode. The system operates at a wavelength of 850 nm using standard telecommunications optical fibre. A general-purpose theoretical model for the performance of QKD systems is presented with reference to these experimental results before predictions are made about realistic detector developments in this system. We discuss, with reference to the theoretical model, how detector operating parameters can be further optimized to maximize key exchange rates.