中国物理B ›› 2005, Vol. 14 ›› Issue (5): 974-979.doi: 10.1088/1009-1963/14/5/020

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Proposal of many-party controlled teleportation for multi-qubit entangled W state

黄志平, 李洪才   

  1. Department of physics, Fujian Normal University, Fuzhou, Fujian 350007, China
  • 收稿日期:2004-11-21 修回日期:2004-12-27 出版日期:2005-05-19 发布日期:2005-05-19
  • 基金资助:
    福建省自然科学基金资助（A0210014）

Proposal of many-party controlled teleportation for multi-qubit entangled W state

Huang Zhi-Ping (黄志平), Li Hong -Cai (李洪才)   

  1. Department of physics, Fujian Normal University, Fuzhou, Fujian 350007, China
  • Received:2004-11-21 Revised:2004-12-27 Online:2005-05-19 Published:2005-05-19
  • Supported by:
    福建省自然科学基金资助（A0210014）

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摘要： A scheme of M-party controlled teleportation for N-qubits entangled W state via (N-1) EPR pairs and one (M+2)-qubits GHZ state is proposed. We achieve the teleportation in such a way that M agents execute the Hadamard transformation, perform the measurement on their qubits and tell the outcome of measurement to receiver. Then we discuss that the receiver can not fully recover the state of the sender if one agent does not cooperate.

关键词: Many-party controlled teleportation, Multi-qubits entangled W state, Hadamard transformation, EPR pair, GHZ state

Abstract: A scheme of M-party controlled teleportation for N-qubits entangled W state via (N-1) EPR pairs and one (M+2)-qubits GHZ state is proposed. We achieve the teleportation in such a way that M agents execute the Hadamard transformation, perform the measurement on their qubits and tell the outcome of measurement to receiver. Then we discuss that the receiver can not fully recover the state of the sender if one agent does not cooperate.

Key words: Many-party controlled teleportation, Multi-qubits entangled W state, Hadamard transformation, EPR pair, GHZ state

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