An efficient scheme for five-party quantum state sharing of an arbitrary m-qubit state using multiqubit cluster states

  • Authors:

  • Kui Hou;Guo-Hong Liu;Xue-Yong Zhang;Shou-Qi Sheng

  • Affiliations:

  • Department of Mathematics and Physics, Anhui University of Architecture, Hefei, China 230601;Department of Mathematics and Physics, Anhui University of Architecture, Hefei, China 230601;Department of Mathematics and Physics, Anhui University of Architecture, Hefei, China 230601;Department of Mathematics and Physics, Anhui University of Architecture, Hefei, China 230601

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2011

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Abstract

We present an efficient scheme for five-party quantum state sharing (QSTS) of an arbitrary m-qubit state with multiqubit cluster states. Unlike the three-partite QSTS schemes using the same quantum channel [Phys. Rev. A 78, 062333 (2008)], our scheme for sharing of quantum information among five parties utilizing a cluster state as an entangled resource. It is found that the six-partite cluster state can be used for QSTS of an entangled state, the five-partite cluster state can be used for QSTS of an arbitrary two-qubit state and also can be used for QSTS of an arbitrary m-qubit state. It involves two-qubit Bell-basis or three-qubit GHZ-basis measurements, not multipartite joint measurements, which makes it more convenient than some previous schemes. In addition, the total efficiency really approaches the maximal value.