Asymmetric five-party quantum state sharing of an arbitrary m-qubit state |
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Authors: | R H Shi L S Huang W Yang and H Zhong |
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Institution: | 1.NHPCC, Depart. of CS. & Tech., USTC,Hefei,P.R. China;2.School of Computer Science and Technology, Anhui University,Hefei,P.R. China;3.Suzhou Institute for Advanced Study, USTC,Suzhou,P.R. China |
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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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Keywords: | |
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