Abstract
We present an asymmetric scheme for five-party quantum state sharing of an arbitrary m-qubit state with the maximally entangled states of two-particle and three-particle. It involves two-particle Bell-basis or three-particle GHZ-basis measurements, rather than five-particle entanglements and five-particle joint measurements, which makes it more convenient in a practical application than some previous schemes. In addition, except that the designated recover of the quantum secret just keeps m particles, other agents only hold one particle in their hands respectively, and thus they only need perform a single-particle measurement on the respective particle with the basis X. Its intrinsic efficiency for qubits approaches 100%, and the total efficiency really approaches the maximal value.
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Shi, R., Huang, L., Yang, W. et al. Asymmetric five-party quantum state sharing of an arbitrary m-qubit state. Eur. Phys. J. D 57, 287–291 (2010). https://doi.org/10.1140/epjd/e2010-00054-3
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DOI: https://doi.org/10.1140/epjd/e2010-00054-3