Multi-hop lossless teleportation method based on non-maximum entangled chain channel

The invention relates to a multi-hop lossless teleportation method based on a non-maximum entangled chain channel. Alice and Bob, which do not directly share a quantum entanglement pair at the beginning, continuously carry out entanglement exchange through the help of p middle nodes; finally, a quantum entanglement channel is constructed; and the multi-hop teleportation process of the sender Alicetransmitting a single-particle multi-energy level unknown quantum state to the receiver Bob is completed. The method in the invention uses the non-maximum entangled chain channel; even the sender andthe receiver do not directly share the quantum entanglement pair, the quantum state information can be still transmitted between both the sides; and the requirement for constructing a complex quantumcommunication network can be satisfied; in the multi-hop lossless teleportation system in the invention, if the teleportation process is successfully executed, the information receiver Bob can obtainthe transmitted quantum sta