量子信令交换机模型设计及性能分析

The model design and performance analysis of quantum signaling switch

本文提出了量子信令交换机的模型,该交换机由经典信息控制模块、交换控制模块和量子交换模块三部分组成.经典控制模块负责将纠缠初态信息传送给纠缠测量及交换单元并更新路由信息.交换控制模块实现通路选择,为纠缠对的分发提供通路.量子交换模块制备纠缠对,进行Bell态的测量,完成纠缠交换.量子信令交换机可以实现多用户间的信令传输及局域网通信.通过对交换机的性能分析与仿真,结果表明该交换机结构简单、安全保密、便于扩展、时延小,对于构建量子通信网有很好的支撑作用.

This paper puts forward a quantum signaling switch model. The quantum signaling switch consists of a classical information control module, an exchange control module and a quantum exchange module. Classical control module transmits the initial entangled state information to the entanglement measurement and switching unit and updates the routing information. Exchange control module will choose the path, and is ready for the distribution channel of the entanglement photons. The quantum exchange module generates quantum entanglement pairs, measures the Bell state and achieves entanglement swapping. Quantum signaling switches can realize multi-user communication and local area network communication. Through the performance analysis and simulation of the switch, the results show that the switch is simple in structure, secure and easy to expand; also the time delay is small. This will be helpful for the construction of the quantum communication network.