Abstract

We propose a novel scheme of quantum parallel teleportation for arbitrary unknown multi-qudit states under the principal of flow split. With the assistance of the central server and the pre-shared entanglement distributed between the intermediate nodes in each path, any arbitrary unknown multi-qudit state can be successfully restored by the final receiver via parallel transmission through various paths. Due to parallel teleportation with distinct paths, this quantum network teleportation can resist network congestion. In addition, only two-qudit measurements are required by the intermediate nodes and the sender node and only one-qudit unitary operation is required by the destination node which reduces the technical requirements of network nodes and makes our protocol more practical and flexible. The analysis also demonstrates that our propose scheme can achieve a good performance in terms of communication cost and time delay. Finally, the unknown states of multiple qudits with hybrid dimensions could be teleported via quantum channels with different dimensions.

Graphic abstract

中文翻译：

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多量子态通过不同路径的量子并行隐形传态

摘要

我们提出了一种新的量子并行隐形传态方案，用于在流分裂原理下的任意未知多量子态。借助中央服务器和每条路径中间节点之间分布的预共享纠缠，任何任意未知的多量子比特状态都可以由最终接收器通过多条路径并行传输成功恢复。由于具有不同路径的并行隐形传态，这种量子网络隐形传态可以抵抗网络拥塞。此外，中间节点和发送节点只需要两个量子比特的测量，目的节点只需要一个量子比特的单一操作，这降低了网络节点的技术要求，使我们的协议更加实用和灵活。分析还表明，我们提出的方案可以在通信成本和时延方面取得良好的性能。最后，具有混合维度的多个量子的未知状态可以通过不同维度的量子通道传送。

图形摘要