Three-party quantum state sharing with six-qubit entangled mixing state

The quantum network has three nodes, each with two identical qubits. The six-qubit system is in a genuine state proposed by Chen et al. [Phys Rev A, 2006, 74: 032324]. In this paper we consider the case where two qubits in each node are confused and propose a three-party quantum state sharing scheme using the six-qubit mixing state as the quantum channel. We investigated scheme security, success probability, sharer symmetry, as well as the underlying physics, and scheme feasibility. The scheme is observed to be secure, including that any state can be safely shared successfully by the three legitimate parties with a 1/2 probability; moreover, the scheme is feasible in terms of the current technologies.