Multi-Hop Teleportation of an Unknown Qubit State Based on W States

被引：15
|
作者：
Zhou, Xiang-Zhen [1 ]
Yu, Xu-Tao [1 ]
Zhang, Zai-Chen [2 ]
机构：
[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 211189, Jiangsu, Peoples R China
[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 211189, Jiangsu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2018年 / 57卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Multi-hop teleportation; W state; Quantum network; Quantum communication; QUANTUM KEY DISTRIBUTION; ENTANGLED STATE;
D O I：
10.1007/s10773-017-3631-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Quantum teleportation is important in quantum communication networks. Considering that quantum state information is also transmitted between two distant nodes, intermediated nodes are employed and two multi-hop teleportation protocols based on W state are proposed. One is hop-by-hop teleportation protocol and the other is the improved multi-hop teleportation protocol with centralized unitary transformation. In hop-by-hop protocol, the transmitted quantum state needs to be recovered at every node on the route. In improved multi-hop teleportation protocol with centralized unitary transformation, intermediate nodes need not to recover the transmitted quantum state. Compared to the hop-by-hop protocol, the improved protocol can reduce the transmission delay and improve the transmission efficiency.
引用
收藏
页码：981 / 993
页数：13
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