Abstract
Implementing quantum communication between space-separated local networks is essential for designing global quantum networks.In this study,we propose quantum teleportation and remote state preparation schemes between users of two space-separated local networks established by continuous-variable multipartite entangled states.In the proposed schemes,the quantum nodes belonging to the two distant local networks are first entangled by entanglement swapping,and then quantum communication protocols are realized.We show that quantum teleportation between any two users belonging to space-separated local networks can be realized with the assistance of other users,and squeezed thermal states can be remotely prepared in one local network by performing a homodyne projective measurement on the state in another distant local network.Our results provide a feasible approach for quantum communication between space-separated quantum networks with multipartite entangled states.
基金项目
国家自然科学基金(11834010)
国家自然科学基金(62005149)
Fundamental Research Program of Shanxi Province(20210302121002)
Fund for Shanxi"1331 Project"Key Subjects Construction()
维普
万方数据