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/lp/springer-journals/asymmetric-multi-party-quantum-state-sharing-of-an-arbitrary-m-qubit-kxfJLnj5eN
- Publisher
- Springer Journals
- Copyright
- Copyright © 2010 by Springer Science+Business Media, LLC
- Subject
- Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
- ISSN
- 1570-0755
- eISSN
- 1573-1332
- D.O.I.
- 10.1007/s11128-010-0176-z
- Publisher site
- See Article on Publisher Site
Abstract
We present a scheme for asymmetric multi-party quantum state sharing of an arbitrary m-qubit state with n agents. The sender Alice first shares m − 1 Bell states and one n + 1-particle Greenberger–Horne–Zeilinger state with n agents, where the agent Bob, who is designated to recover the original m-qubit state, just keeps m particles and other agents (all controllers) n − 1 particles, that is, each controller only holds one particle in hand. Subsequently, Alice performs m Bell-basis measurements on her 2m particles and each controller only need take a single-particle measurement on his particle with the basis X. Finally, Bob can recover the original m-qubit state with the corresponding local unitary operations according to Alice and all controllers’ measurement results. Its intrinsic efficiency for qubits approaches 100%, and the total efficiency really approaches the maximal value, which is higher than those of the known symmetric schemes.
Journal
Quantum Information Processing – Springer Journals
Published: Apr 14, 2010
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