论文标题
用于结束节点的量子纠缠分布的可配置协议
A Configurable Protocol for Quantum Entanglement Distribution to End Nodes
论文作者
论文摘要
量子中继器网络的主要任务是在最终节点之间提供纠缠。现有的大多数纠缠分布协议都不考虑纯化，因此将其委派给上层。这是一个主要的缺点，因为一旦建立了端到端的纠缠连接（或其部分），如果它的忠诚度（f）不在fmin（大于0.5）和fmax（小于1）的间隔内，则无法纯化它。在本文中，我们提出了排名的纠缠分布协议（REDIP），这是一种以连接为导向的协议，可以克服上述缺点。通过在我们的协议中包括两种共同纯化和纠缠交换的机制来实现这一结果。我们使用仿真来研究这些机制对中继器网络性能的影响，以吞吐量和忠诚度。此外，我们展示了如何轻松地配置Redip来实施自定义纠缠交换和纯化策略，包括（但不限于）最近两项作品中采用的策略。
The primary task of a quantum repeater network is to deliver entanglement among end nodes. Most of existing entanglement distribution protocols do not consider purification, which is thus delegated to an upper layer. This is a major drawback since, once an end-to-end entangled connection (or a portion thereof) is established it cannot be purified if its fidelity (F) does not fall within an interval bounded by Fmin (greater than 0.5) and Fmax (less than 1). In this paper, we propose the Ranked Entanglement Distribution Protocol (REDiP), a connection-oriented protocol that overcomes the above drawback. This result was achieved by including in our protocol two mechanisms for carrying out jointly purification and entanglement swapping. We use simulations to investigate the impact of these mechanisms on the performance of a repeater network, in terms of throughput and fidelity. Moreover, we show how REDiP can easily be configured to implement custom entanglement swapping and purification strategies, including (but not restricted to) those adopted in two recent works.
