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

Multi-party quantum state sharing of an arbitrary two-qubit state with Bell states 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. Quantum Information Processing Springer Journals

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

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Springer US
Copyright © 2010 by Springer Science+Business Media, LLC
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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