An efficient scheme for multi-party quantum state sharing of an arbitrary multi-qubit state with one GHZ channel

摘要

We present an innovative and extremely efficient scheme to share an arbitrary multi-qubit state between n agents with only 1GHZ channel under control of m agents in a network. Compared with existing ones in this literature, our scheme requires less communication resources, least qubits and only three physical favorable simple operations (single-qubitmeasurement,Bell-basis measurement andCNOTgate operations) are included, leading to a higher overall efficiency.