We implement a simulation environment on top of NetSquid that is specifically designed for estimating the end-to-end fidelity across a path of quantum repeaters or quantum switches. The switch model includes several generalizations which are not currently available in other tools, and are useful for gaining insight into practical and realistic quantum network engineering problems: an arbitrary number of memory registers at the switches, simplicity in including entanglement distillation mechanisms, arbitrary switching topologies, and more accurate models for the depolarization noise. An illustrative case study is presented, namely a comparison in terms of performance between a repeater chain where repeaters can only swap sequentially, and a single switch equipped with multiple memory registers, able to handle multiple swapping requests.

翻译：我们在NetSquid之上实现了一个专门用于估算量子中继器或量子交换机路径上端到端保真度的仿真环境。该交换机模型包含若干目前在其他工具中尚未提供的通用化特性，这些特性有助于深入理解实际且现实的量子网络工程问题：交换机中任意数量的存储器寄存器、便于引入纠缠提纯机制、任意的交换拓扑结构以及更精确的退极化噪声模型。本文展示了一个说明性案例研究，即对两种架构的性能比较：一种是中继器仅能顺序执行交换操作的中继链，另一种是配备多个存储器寄存器、能够处理多重交换请求的单一交换机。