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Two protocols for transmitting an unknown single-photon state and an unknown non-maximally entangledEPR state are presented by using the quantum channel of three-phonton GHZ (Greenberger-Horne-Zeilinger) state,which can be realized with unitary success probability when collective noise is taken into account.The protocols canalso be generalized to transmit multi-photon state or to realize quantum communication in collective noise channel.
Two protocols for transmitting an unknown single-photon state and an unknown non-maximally entangled EPR state are presented by using the quantum channel of three-phonton GHZ (Greenberger-Horne-Zeilinger) state, which can be realized with unitary success probability when collective noise is taken into account. protocols canalso be generalized to transmit multi-photon state or to realize quantum communication in collective noise channel.