Quantum multicast based on joint remote state preparation  

作　　者：Zhihua Zhang Beining Shen Hanchen Zhang Zhipeng Qiu 

机构地区：[1]Interdisciplinary Center for Fundamental and Frontier Sciences,Nanjing University of Science and Technology,Jiangyin Campus,Jiangyin 214443,China [2]School of Cyber Science and Engineering,Nanjing University of Science and Technology,Jiangyin Campus,Jiangyin 214443,China [3]School of Mathematics and Statistics,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Communications in Theoretical Physics》2024年第10期39-54,共16页理论物理通讯（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 12201300)。

摘　　要：Effective propagation of information among multiple users is the purpose of realizing large-scale quantum communication networks. In this paper, multicast protocols for any single, two and three qubits with real amplitude and complex phase information are presented. They were realized using a composite of Greenberger–Horne–Zeilinger states as shared channels. Joint remote state preparation was the main method for completing quantum multicast. At the same time, quantum state tomography of the schemes was carried out on the IBM Quantum platform.The obtained states were compared with the target states by fidelity. The analysis of communication efficiency and noise effects shows that our protocol has advantages in the case of complex coefficients.

关 键 词：quantum multicast Greenberger–Horne–Zeilinger state joint remote state preparation quantum state tomography 

分 类 号：O413[理学—理论物理]