Multihop nondestructive teleportation via different nonmaximally entangled channels
Fenxiang Fu, Min Jiang · Journal of the Optical Society of America B · 2020
We propose a teleportation scheme for nondestructively transmitting an unknown qudit state between two remote communication parties that are linked by sequential Bell pairs. With independent and simultaneous entanglement swapping among the intermediate nodes, a direct entangled channel between the source node and the destination node is established. Our scheme preserves the initial unknown state even if the teleportation fails. Different nonmaximally entangled channels are distributed among the participants so that the quantum channel requirement is reduced. In addition, the communication delay is reduced significantly since the measuring and the transmitting are conducted simultaneously by the intermediate nodes.