通过在节点间建立成对纠缠态,构造了一个量子无标度网络。通过局域化纠缠交换的方式对网络中的节点进行随机攻击以及等概率地使网络中的节点发生蓄意故障, 对比其纠缠渗流阈值变化。结果表明随机攻击下的阈值明显变小,蓄意故障下的阈值明显增大,体现了量子无标度网络的鲁棒性与脆弱性;纠缠浓缩下的量子无标度网络在随机攻击与蓄意故障下仍具有鲁棒性与脆弱性,但 较纠缠浓缩前的鲁棒性变弱,说明真实网络具有较好的鲁棒性。

A quantum scale-free network is built up by establishing pairwise entanglement state among nodes. The entanglement percolation threshold values change is compared by random attacking on nodes in network by the way of localization entanglement swapping, and making the nodes targeted failure with the same probability. Results show that the threshold values decrease significantly under random attack and increase significantly under targeted failure, which reflects robustness and fragility of the quantum scale-free network. The scale-free quantum network with entanglement distillation is still robust and fragile under random attack and targeted failure, but which is relatively weaker than that without distillation. It indicates that the real network has a better robustness.