Multi-hop teleportation of arbitrary multi-qudit states based on d -level GHZ channels

IET Quantum Communication

article

Yi Ding¹  Min Jiang¹ 

[1] School of Electronics & Information Engineering, Soochow University

关键词: teleportation;    quantum communication;    quantum entanglement;   

DOI  :  10.1049/qtc2.12052

学科分类：环境科学（综合）

来源: Wiley

【 摘 要 】

The combination of quantum communication technology and wireless networks brings a flexible and secure communication method that adapts to a more complex and open network environment. A new multi-hop teleportation scheme is investigated for transferring arbitrary unknown multi-qudit states between two distant parties. Based on a more general quantum routing protocol, intermediate nodes are introduced and linked with each other via d-level entangled Greenberger-Horne-Zeilinger states as quantum channels. In this multi-hop teleportation protocol, the source node and all the intermediate nodes can perform the entanglement measurement and transmit the measurement results simultaneously, thus reducing the time consumption largely. Furthermore, a general matrix formula is derived between the measurement results and the receiver's state, which enables the receiver to restore the unknown state efficiently. Compared with previous multi-hop teleportation protocols, the teleportation protocol of arbitrary unknown multi-qudit states of the authors can transfer more information, and it demonstrates lower computational complexity and higher flexibility.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND