The Design Of Hierarchical Quantum Information Splitting Protocol

Quantum communication is a new discipline of classical information theory and quantum mechanics.As an important branch of quantum information science,compared with classical communication,quantum communication has characteristics of high efficiency and absolute safety.Quantum communication has great application prospect in both life and mili-tary.This paper mainly focuses on the hierarchical quantum information splitting in quantum communication,designs two hierarchical quantum information sharing protocols with different quantum states as quantum channels.In this paper,the main contents are as follows:1.Using the product state of four-qubit cluster state and three-qubit GHZ state as quantum channel,we propose a new protocol for hierarchical quantum information splitting.In this scheme,the sender sets multiple recipients,and the recipient are not the same as the ability to recover the information sent by the sender.First,the sender makes Bell measurement of his two particles and sends the measurement result to receiver t,hrough the classical channel,then the receiver makes measurements of his own particle,finallywith the help of some or all receivers,the recuperator can restore the original quantum information by making corresponding unitary transformations on the particles.2.A scheme of controlled hierarchical quantum information splitting of single qubit un-known state with the product state of five-qubit cluster state and three-qubit GHZ state as quan-tum channel.Compared with the previous scheme,this scheme has added a controller,that is to say,the whole communication process is supervised by the controller.If the controller finds that the receiver is dishonest,he can immediately abort the communication.He will help them to complete the communication if and only if the controller ensures that the receiver is reliable,this greatly improves the security of the communication.