Quantum Teleportation of a Three-qubit State using a Four-qubit Entangled State
Bo Zhang, Xingtong Liu, Jian Wang, Chaojing Tang · 2015
had shown that a special form of three-qubit entangled state can be teleported by using a fivequbit cluster state.However, we demonstrate that five-qubit cluster state and five-qubit von-Neumann projective measurements are not necessary to complete the protocol.The special three-qubit state can be teleported via a four-qubit entangled state, by introducing one ancillary qubit and one controlled-not operation.Physical realization of the proposed four-qubit entangled state and the generalization to teleport the multi-qubit state is also presented.