中国物理B ›› 2005, Vol. 14 ›› Issue (11): 2149-2152.doi: 10.1088/1009-1963/14/11/001

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Multi-agent controlled teleportation of multi-qubit quantum information via two-step protocol

杨杰   

  1. School of Physics & Material Science, Anhui University, Hefei 230039, China
  • 收稿日期:2004-12-21 修回日期:2005-06-03 出版日期:2005-11-20 发布日期:2005-11-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10304022).

Multi-agent controlled teleportation of multi-qubit quantum information via two-step protocol

Yang Jie (杨杰)   

  1. School of Physics & Material Science, Anhui University, Hefei 230039, China
  • Received:2004-12-21 Revised:2005-06-03 Online:2005-11-20 Published:2005-11-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10304022).

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摘要： Utilizing both the general quantum teleportation and the two-step protocol, a new method is presented by which multi-qubit quantum information can be teleported in a much easier way from a sender Alice to a receiver Bob via the control of many agents in a network than by Yang et al's method. In this method, only all the agents collaborate with Bob can the unknown states in Alice's qubits be fully reconstructed in Bob's qubits. Comparisons between the method and Yang et al's method are made. Results show that, in this method,the preparation difficulty of initial states and the identification difficulty of entangled states are considerably reduced, new method is more feasible in technique, and Hadamard operations are not needed at all.

关键词: quantum teleportation, two-step protocol, quantum information

Abstract: Utilizing both the general quantum teleportation and the two-step protocol, a new method is presented by which multi-qubit quantum information can be teleported in a much easier way from a sender Alice to a receiver Bob via the control of many agents in a network than by Yang et al's method. In this method, only all the agents collaborate with Bob can the unknown states in Alice's qubits be fully reconstructed in Bob's qubits. Comparisons between the method and Yang et al's method are made. Results show that, in this method,the preparation difficulty of initial states and the identification difficulty of entangled states are considerably reduced, new method is more feasible in technique, and Hadamard operations are not needed at all.

Key words: quantum teleportation, two-step protocol, quantum information

中图分类号:  (Quantum computation architectures and implementations)

  • 03.67.Lx
03.65.Ud (Entanglement and quantum nonlocality)