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Multi-party quantum state sharing of an arbitrary two-qubit state with Bell states

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Abstract

We present a new scheme for sharing an arbitrary two-qubit quantum state with n agents. In our scheme, the sender Alice first shares n Einsein-Podolsky-Rosen (EPR) pairs in Bell states with n agents. After setting up the secure quantum channel, Alice first applies (n − 2) Controlled-Not (CNOT) gate operations, and then performs two Bell-state measurements and (n − 2) single-particle measurements (n >2). In addition, all controllers only hold one particle in their hands, respectively, and thus they only need to perform a single-particle measurement on the respective particle with the basis \({\{{\vert}0\rangle, {\vert}1\rangle\}}\). Compared with other schemes with Bell states, our scheme needs less qubits as the quantum resources and exchanges less classical information, and thus obtains higher total efficiency.

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Authors and Affiliations

  1. NHPCC, Depart. of CS. & Tech., USTC, 230027, Hefei, China

    Run-hua Shi, Liu-sheng Huang & Wei Yang

  2. School of Computer Science and Technology, Anhui University, 230039, Hefei, China

    Run-hua Shi & Hong Zhong

  3. Suzhou Institute for Advanced Study, USTC, 215123, Suzhou, China

    Liu-sheng Huang & Wei Yang

Authors
  1. Run-hua Shi
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  2. Liu-sheng Huang
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  3. Wei Yang
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  4. Hong Zhong
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Correspondence to Run-hua Shi.

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Shi, Rh., Huang, Ls., Yang, W. et al. Multi-party quantum state sharing of an arbitrary two-qubit state with Bell states. Quantum Inf Process 10, 231–239 (2011). https://doi.org/10.1007/s11128-010-0191-0

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  • DOI: https://doi.org/10.1007/s11128-010-0191-0

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