论文标题
量子密钥分布系统的通用模拟框架
A universal simulating framework for quantum key distribution systems
论文作者
论文摘要
量子密钥分布（QKD）提供了一种基于物理的方法，可以安全地调解远程用户之间的密钥。仿真是设计和优化QKD系统的必要方法。我们基于光子信号和光学设备的量子操作员描述开发了通用仿真框架。光学设备可以由光子激发事件自由地组合和驱动，这使其适用于任意QKD系统的原则上。我们的框架着重于光学设备和系统结构的现实特征。在建模时，考虑了设备的缺陷和量子系统的非本地性能。我们模拟了QKD系统的基础，模拟了单光子和Hong-Ou-Mandel（HOM）干扰光单元。使用此事件驱动框架的结果与理论结果非常吻合，这表明其对QKD的可行性。
Quantum key distribution (QKD) provides a physical-based way to conciliate keys between remote users securely. Simulation is an essential method for designing and optimizing QKD systems. We develop a universal simulation framework based on quantum operator descriptions of photon signals and optical devices. The optical devices can be freely combined and driven by the photon excitation events, which make it appropriate for arbitrary QKD systems in principle. Our framework focuses on realistic characters of optical devices and system structures. The imperfections of the devices and the non-local properties of a quantum system are taken into account when modeling. We simulate the single-photon and Hong-Ou-Mandel (HOM) interference optical units, which are fundamental of QKD systems. The results using this event-driven framework agree well with the theoretical results, which indicate its feasibility for QKD.
