首页|Continuous variable quantum teleportation and remote state preparation between two space-separated local networks

Continuous variable quantum teleportation and remote state preparation between two space-separated local networks

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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.

quantum communicationquantum networkquantum teleportationremote state preparationentanglement swappingcontinuous variable

Siyu REN、Dongmei HAN、Meihong WANG、Xiaolong SU

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State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China

Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

国家自然科学基金国家自然科学基金Fundamental Research Program of Shanxi ProvinceFund for Shanxi"1331 Project"Key Subjects Construction

118340106200514920210302121002

2024

10.1007/s11432-023-3913-2

中国科学:信息科学(英文版)
中国科学院

中国科学:信息科学(英文版)

CSTPCDEI
影响因子：0.715
ISSN：1674-733X
年,卷(期)：2024.67(4)
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