摘要
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.
基金
Supported by the National Natural Science Foundation of China under Grant No.10704011
the Research Project of the Education Department of Liaoning Province of China under Grant No.2008006
