Probabilistic teleportation of a two-particle state by two three-particle general W states

A scheme for teleporting an unknown two-particle state is proposed when two general W states are utilized as quantum channels. In this scheme, besides the sender's Bell state measurements, the recipient need introduce an auxiliary particle, perform Von Neumann measurements and carry out appropriate unitary transformation. Finally, the recipient can realize teleportation with different probabilities of successful teleportaion by selecting different particles to recover the original state. In order to gain the biggest probability of successful teleportation, it is useful to select proper particles to reconstruct the state to be teleported.