Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers
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TN91

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    Abstract:

    A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.

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LIU Yu-ling, MAN Zhong-xiao, XIA Yun-jie. Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers[J]. Optoelectronics Letters,2008,4(4):

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