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.
Received: 21 November 2004
Revised: 27 December 2004
Accepted manuscript online:
PACS:
4250
Fund: 福建省自然科学基金资助（A0210014）
Cite this article:
Huang Zhi-Ping (黄志平), Li Hong -Cai (李洪才) Proposal of many-party controlled teleportation for multi-qubit entangled W state 2005 Chinese Physics 14 974
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