Long-distance controlled quantum teleportation in a quantum wireless multihop network
摘要
In a quantum wireless multihop network, some quantum nodes, including the source node and the destination node, do not have the direct quantum link with each other through any entangled states. Such quantum wireless multihop network can be used for teleporting unknown quantum state over a long distance which is essential for long-distance quantum communication. In this paper, we propose two different schemes for controlled quantum teleportation of an arbitrary single-qubit quantum information state in a quantum wireless multihop network where the controller node is not entangled with all nodes except the source node, and the source node is not entangled with destination node. The proposed quantum wireless multihop network requires two-qubit maximally entangled Bell states as the quantum channels and enables the long-distance secure quantum communication. Also, our proposed long-distance controlled quantum teleportation schemes are more feasible and are easy to implement physically.