Teleportation of an Arbitrary Two-Particle State by Two Partial Entangled Three-Particle GHZ States

We present a scheme for teleporting an unknown arbitrarytwo-particle state from a sender to either one of two receivers. The quantumchannel is composed of two partial entangled three-particle GHZ states. Anunknown arbitrary two-particle state can be perfectly teleportedprobabilistically if the sender performs two generalized Bell-statemeasurements and each receiver introduces an appropriate unitarytransformation with the help of the other receiver's Hadamard operations andsimple measurements.