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  1. (1) 西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安710071
    (2) 西安电子科技大学 计算机网络与信息安全教育部重点实验室,陕西 西安710071
    (3) 清华大学 物理系,北京100084
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-12-20 发布日期:2006-12-20

A scheme for quantum local area networks and performance analysis

ZHU Chang-hua(1);PEI Chang-xing(2);MA Huai-xin(3);YU Xiao-fei(2)   

  1. (1) State Key Lab. of Integrated Services Networks, Xidian Univ., Xi’an 710071, China
    (2) Ministry of Edu. Key Lab. of Computer Networks and Information Security, Xidian Univ., Xi’an 710071, China
    (3) Dept. of Physics, Tsinghua Univ., Beijing 100084, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-12-20 Published:2006-12-20



关键词: 量子通信, 局域网, 纠缠交换, 载波侦听多址/碰撞检测


This paper presents a scheme for Quantum Local Area Networks (QLAN) based on entanglement swapping and classical switching, in which the Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol is applied to implement multiple users communication, the message on building and releasing channel, etc. is transferred by the classical switch, and the entanglement of photons between sender and receiver is built by entanglement swapping and quantum information is transferred by the principle of quantum teleportation. Performance analysis results show that the throughput of QLAN increases greatly with higher probabilities with which entanglement is built between sender’s photons and receiver’s photons, the sender finishes the joint Bell state measurement successfully and the receiver detects the sender’s qubit information, respectively.

Key words: quantum communications, local area networks, entanglement swapping, CSMA/CD


  • TN915.02