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arXiv 2103.03266quant-phcond-mat.dis-nnmath-phmath.MP
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噪声量子网络的鲁棒性

Robustness of Noisy Quantum Networks

Bruno C. Coutinho, William J. Munro, Kae Nemoto, Yasser Omar

摘要:

量子网络是复杂网络的一种新范式,使我们能够利用网络化的量子技术并开发量子互联网。但是,当量子网络的链路和节点开始出现故障时,它的鲁棒性有多大?我们表明,基于典型的噪声量子中继节点的量子网络容易发生不连续的相变相对于随机丢失的操作链路和节点,突然损害网络的连通性,从而显着限制其操作的范围。此外,我们确定的临界量子中继器的效率,以避免这种灾难性的连接损失作为网络拓扑结构的函数,网络的大小,和在网络中的纠缠分布。特别是,我们的研究结果表明,无标度拓扑结构是建立强大的大规模量子互联网的关键设计原则。

英文摘要:

Quantum networks are a new paradigm of complex networks, allowing us to harness networked quantum technologies and to develop a quantum internet. But how robust is a quantum network when its links and nodes start failing? We show that quantum networks based on typical noisy quantum-repeater nodes are prone to discontinuous phase transitions with respect to the random loss of operating links and nodes, abruptly compromising the connectivity of the network, and thus significantly limiting the reach of its operation. Furthermore, we determine the critical quantum-repeater efficiency necessary to avoid this catastrophic loss of connectivity as a function of the network topology, the network size, and the distribution of entanglement in the network. In particular, our results indicate that a scale-free topology is a crucial design principle to establish a robust large-scale quantum internet.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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