论文标题
通过多个量子记忆的向后传播量子中继器协议
Backward propagating quantum repeater protocol with multiple quantum memories
论文作者
论文摘要
具有多个量子记忆的量子中继器可在长距离内提供高吞吐量，低潜伏期和高保真量子状态（Qubit）。但是，传统的量子中继器协议需要中继器节点中多个量子记忆之间的完整连接，这在技术上具有挑战性。在这里，我们提出了一种基于向后传播光子发射和吸收的量子中继器协议，其中量子记忆在时间域中多路复用，以加快单个传输通道，而无需完全连接，从而极大地促进了物理实现。尽管该方案是用钻石中的氮呈（NV）中心描述的，但它适用于各种物理系统，并打开了用于分布式量子计算和量子互联网的高速高保真量子网络的可能性。
Quantum repeaters with multiple quantum memories provide high throughput, low latency, and high fidelity quantum state (qubit) transfer over long distances. However, conventional quantum repeater protocols require full connections among the multiple quantum memories in a repeater node, which is technically challenging. Here, we propose a quantum repeater protocol based on backward propagating photon emission and absorption, where the quantum memories are multiplexed in the time-domain to speed up a single transmission channel without requiring full connectivity, drastically facilitating physical implementation. Although the protocol is described with nitrogen-vacancy (NV) centers in diamond, it is applicable to various physical systems and opens up the possibility of high-speed high-fidelity quantum networks for distributed quantum computation and quantum Internet.
