Continuous-Variable Quantum Key Distribution with Multi-Mode Signals

多模信号的连续可变量子密钥分配

• 批准号: 2276096
• 金额: --
• 依托单位: University of York
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2276096
• 关键词: Continuous; Variable; Quantum; Key; Distribution

Continuous Variable Quantum Key Distribution (CV-QKD) uses amplitude and phase modulation of light in order to exchange secure keys between two legitimate users. Since the intensity of the CV-QKD signal is extremely low, the quantum uncertainty associated with the signal introduces noise in the signal measurement while at the same time provides security under the laws of quantum physics. CV-QKD resembles to classical coherent communication in many of its aspects where digital signal data processing on the measurement data is a most common one.With this research, we are aiming to develop efficient data processing in .NET environment for multi-mode CV-QKD systems for fibre as well as for free-space communication channels. The primary goal of this research is to develop CV-QKD system that offers high signal to noise ratio by utilizing multiple modes of the quantum signals. It also includes programming and interfacing of data generation and acquisition devices, on board data manipulation and reconciliation. Particular emphasis is given on error correction codes running in graphics processing units. The research is also studying the vulnerabilities associated with multi-mode CV-QKD systems.

连续可变量子密钥分发（CV-QKD）使用光的振幅和相位调制来在两个合法用户之间交换安全密钥。由于CV-QKD信号的强度极低，与信号相关的量子不确定性在信号测量中引入了噪声，同时在量子物理定律下提供了安全性。CV-QKD在许多方面与经典相干通信相似，其中对测量数据进行数字信号数据处理是最常见的一种。通过这项研究，我们的目标是开发高效的数据处理。NET环境用于光纤和自由空间通信信道的多模CV-QKD系统。本研究的主要目标是利用量子信号的多模式，开发高信噪比的CV-QKD系统。它还包括数据生成和采集设备的编程和接口，机载数据操作和协调。特别强调在图形处理单元中运行的纠错码。该研究还研究了与多模式CV-QKD系统相关的漏洞。