Hierarchical Quantum Information Splitting of an Arbitrary Two-Qubit Using a Single Quantum Resource

In this paper, we describe a single quantum resource to split the quantum information of arbitrary two-qubit. In addition, we discuss its hierarchical situation, so as to achieve more efficient and convenient information sharing. The sender sends the secret state to the other three parties, and then the sender performs Bell base measurement on himself. Then we use three lines to share the information successfully. We find that when the high privileged recipient restores the secret state, he can succeed only with the help of one of the two low privileged recipients; and when the low privileged recipient restores the secret state, he can succeed only with the help of one of the two low privileged recipients. In the complex secret state, he needs the help of the high privileged receiver and the remaining low privileged receiver, and then successfully realizes the sharing of the secret state through corresponding operations.