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arXiv 1306.6134quant-ph
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偏振编码与器件无关的量子密钥分发的实验验证

Experimental Demonstration of Polarization Encoding Measurement-Device-Independent Quantum Key Distribution

Zhiyuan Tang, Zhongfa Liao, Feihu Xu, Bing Qi, Li Qian, Hoi-Kwong Lo

摘要:

我们展示了偏振编码测量设备无关的量子密钥分发(MDI-QKD)的第一个实现,这是免疫所有检测器的侧信道攻击。每个单独的脉冲的主动相位随机化被实现以防止对不完美源的攻击。通过优化诱饵状态协议中的参数,我们表明在大光纤距离上实现偏振编码MDI-QKD是可行的。1600比特的安全密钥在由10公里电信光纤分隔的双方之间生成。我们的工作提出了构建MDI-QKD网络的可能性,在该网络中,复杂而昂贵的检测系统放置在中心节点中,连接到它的用户可以通过使用紧凑且低成本的设备制备偏振量子比特来进行保密通信。由于MDI-QKD与量子网络高度兼容,我们的工作使量子互联网的实现更近了一步。

英文摘要:

We demonstrate the first implementation of polarization encoding measurement-device-independent quantum key distribution (MDI-QKD), which is immune to all detector side-channel attacks. Active phase randomization of each individual pulse is implemented to protect against attacks on imperfect sources. By optimizing the parameters in the decoy state protocol, we show that it is feasible to implement polarization encoding MDI-QKD over large optical fiber distances. A 1600-bit secure key is generated between two parties separated by 10 km of telecom fibers. Our work suggests the possibility of building a MDI-QKD network, in which complicated and expensive detection system is placed in a central node and users connected to it can perform confidential communication by preparing polarization qubits with compact and low-cost equipment. Since MDI-QKD is highly compatible with the quantum network, our work brings the realization of quantum internet one step closer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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