Probabilistic teleportation of an arbitrary two-particle state by a partially entangled three-particle GHZ state and W state

We present a scheme for teleporting an arbitrary and unknown two-particle state from a sender to either one of two receivers. A partially entangled three-particle GHZ state and a partially entangled three-particle W state are used as the quantum channel. An arbitrary and unknown two-particle state can be perfectly teleported probabilistically if the sender performs two generalized Bell-state measurements while either one of two receivers introduces an appropriate unitary transformation with the help of the other receiver's the Hadamard operation and simple measurements.