Continuous-variable quantum key distribution with 1 Mbps secure key rate
Continuous-variable quantum key distribution with 1 Mbps secure key rate
复制标题
具有 1 Mbps 安全密钥速率的连续可变量子密钥分发
DOI：
10.1364/oe.23.017511
复制
发表时间：
2015-06-29
期刊：
影响因子：
3.8
通讯作者：
Zeng, Guihua
中科院分区：
文献类型：
--
作者：
Huang, Duan;Lin, Dakai;Zeng, Guihua
我们报告了第一个连续变量量子密钥分发（CVQKD）实验，使创建1 Mbps的安全密钥速率超过25公里的标准电信光纤在粗波分复用器（CWDM）的环境。这一结果是实现了两个主要的技术进步：1 GHz的散粒噪声限制零差检测器的使用和50 MHz的时钟系统的实施。该方法有效地抑制了CWDM系统中本振噪声光子和经典数据信道噪声光子所产生的多余噪声。我们注意到，高比特率CVQKD在复用环境中的实验验证是朝着光纤网络中的大规模部署迈出的重要一步。(C)2015年美国光学学会
We report the first continuous-variable quantum key distribution (CVQKD) experiment to enable the creation of 1 Mbps secure key rate over 25 km standard telecom fiber in a coarse wavelength division multiplexers (CWDM) environment. The result is achieved with two major technological advances: the use of a 1 GHz shot-noise-limited homodyne detector and the implementation of a 50 MHz clock system. The excess noise due to noise photons from local oscillator and classical data channels in CWDM is controlled effectively. We note that the experimental verification of high-bit-rate CVQKD in the multiplexing environment is a significant step closer toward large-scale deployment in fiber networks. (C) 2015 Optical Society of America