局部纠缠交换对量子随机网络鲁棒性的影响

J4 ›› 2015, Vol. 32 ›› Issue (6): 699-705.

局部纠缠交换对量子随机网络鲁棒性的影响

张万航,马雷

华东师范大学物理系理论物理研究所，上海 200241

收稿日期:2015-01-06 修回日期:2015-03-30 出版日期:2015-11-28 发布日期:2015-11-05
通讯作者: 马雷，华东师范大学物理系副教授，主要研究方向为量子信息与量子通讯 E-mail:lma@phy.ecnu.edu.cn
作者简介:张万航，研究生，主要研究方向为量子信息与量子通讯,Email:51120602093@ecnu.cn。
基金资助:
国家自然科学基金项目资助（11174081）

Influence of Local Entanglement Swapping to Quantum Random Networks Robustness

ZHANG Wan-hang, Ma Lei1

Institute for Theoretical Physics, East of China Normal University, Shanghai, 200241

Received:2015-01-06 Revised:2015-03-30 Published:2015-11-28 Online:2015-11-05

摘要/Abstract

摘要：

利用纠缠渗流的方法，在量子随机网络中任意两个节点间建立远距离纠缠态，同时还进行了局部纠缠交换的操作。通过此操作改变了网络中局部节点间的连接情况，也使整个网络的拓扑结构发生变化。重点探讨了局部操作对量子随机网络鲁棒性的影响，这种影响通过纠缠渗流的阈值变化情况来体现。通过理论分析和数值模拟，发现有操作时度大的节点数目明显增多，遭受随机攻击后的阈值变化也较小。这说明进行局部纠缠交换操作能够大幅度提高量子网络受到攻击后的连接鲁棒性。

关键词: 量子随机网络, 纠缠渗流, 纠缠交换, 鲁棒性

Abstract:

Entanglement percolation was used to establish long-distance entanglement between arbitrary nodes of quantum random networks. There is a local entanglement swapping operation for the network. This operation changes the local connection of the network, which also lead to the entire network topology structure is changed. It mainly discusses the influence of local operation to quantum networks robustness. When there are operation, we through theoretical analysis and numerical simulation find that the number of the larger degree nodes increase significantly and the threshold value changes less. This suggests that local entanglement swapping can greatly improve the quantum random networks robustness.

Key words: Quantum Random Networks, Entanglement Percolation, Entanglement Swapping, Robustness

张万航马雷. 局部纠缠交换对量子随机网络鲁棒性的影响[J]. J4, 2015, 32(6): 699-705.

ZHANG Wan-hang, Ma Lei1. Influence of Local Entanglement Swapping to Quantum Random Networks Robustness[J]. J4, 2015, 32(6): 699-705.

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