Unknown State Transmission Using GHZ States via Collective Noise Channel
Li Dong, Xiu Xiao-Ming, Gao Ya-Jun, Chi Feng · Communications in Theoretical Physics · 2010
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. The protocols can also be generalized to transmit multi-photon state or to realize quantum communication in collective noise channel.