Teleportation of an Arbitrary Two-Particle State via a Single Cluster-Class State

Teleportation of an arbitrary two-qubit state with a single partially entangled state,a four-qubit linearcluster-class state,is studied.The case is more practical than previous ones using maximally entangled states as thequantum channel.In order to realize teleportation,we first construct a cluster-basis of 16 orthonormal cluster states.We show that quantum teleportation can be successfully implemented with a certain probability if the receiver can adoptappropriate unitary transformations after receiving the sender’s cluster-basis measurement information.In addition,animportant conclusion can be obtained that a four-qubit maximally entangled state (cluster state) can be extracted froma single copy of the cluster-class state with the same probability as the teleportation in principle.