Quantum networking allows the transmission of information in ways unavailable in the classical world. The information encoded in a single qubit can now be split and transmitted in a coherent way over different routes. This aggregation allows information to be transmitted in a fault tolerant way between different parts of the quantum network (or the future internet), even when that is not achievable with a single path approach. It is a quantum phenomenon not available in conventional telecommunication networks either. We show how the multiplexing of independent quantum channels allows a distributed form of quantum error correction to protect the transmission of quantum information between nodes or users of a quantum network. Combined with spatial-temporal single-photon multiplexing, we observe a significant drop in network resources required to transmit that quantum signal, even when only two channels are involved. This work goes far beyond the concepts of channel capacities and shows how quantum networking may operate in the future.

中文翻译：

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聚集量子网络

量子网络允许以经典世界无法获得的方式传输信息。现在，可以将以单个qubit编码的信息拆分并以连贯的方式在不同的路由上传输。这种聚合允许信息以容错的方式在量子网络（或未来的互联网）的不同部分之间传输，即使使用单路径方法无法实现。这是传统电信网络中也不可用的量子现象。我们展示了独立量子通道的复用如何允许量子错误校正的分布式形式来保护量子信息在量子网络的节点或用户之间的传输。结合时空单光子多路复用，我们观察到，即使仅涉及两个通道，传输该量子信号所需的网络资源也会显着下降。这项工作远远超出了信道容量的概念，并显示了量子网络在未来的运作方式。