A prototype of a free-space QKD scheme based on the B92 protocol
A prototype of a free-space QKD scheme based on the B92 protocol
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基于B92协议的自由空间QKD方案原型
DOI：
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发表时间：
2011
期刊：
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通讯作者：
P. Villoresi
中科院分区：
文献类型：
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作者：
Matteo Canale;D. Bacco;Simon Calimani;F. Renna;N. Laurenti;G. Vallone;P. Villoresi
我们描述了QuAKE（量子高级密钥交换器）的架构，这是一个基于B92协议[1]的自由空间量子信道上量子密钥分发（QKD）的实验装置。该系统由一个发射器（Alice）和一个接收器（Bob）组成，它们通过自由空间量子信道连接在大约50米的距离上，并且每个都由现场可编程门阵列（FPGA）驱动。Alice和Bob共享的原始密钥在随后的四个步骤（即筛选、信道估计、密钥调和和隐私放大）中进行处理，这些步骤在Matlab中实现。最后，公共讨论是通过运行在Internet协议（IP）网络协议上的用户数据报协议（UDP）传输协议实现的，而802.11g是物理层传输的基础。
We describe the architecture of QuAKE (Quantum Advanced Key Exchanger), an experimental setup for quantum key distribution (QKD) over a free-space quantum channel based on the B92 protocol [1]. The system consists of a transmitter (Alice) and a receiver (Bob) that are connected through a free-space quantum channel over a distance of approximately 50 m, and are each driven by a field-programmable gate array (FPGA). The raw key shared by Alice and Bob is processed in four subsequent steps (i.e., sifting, channel estimation, key reconciliation and privacy amplification) which are implemented in Matlab. Finally, public discussion is implemented with the user datagram protocol (UDP) transport protocol running over the Internet protocol (IP) network protocol, while 802.11g underlies the physical layer transmission.