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Efficient symmetric multiparty quantum state sharing of an arbitrarym-qubit state

2005/11/30 by Xi-Han Li, Xihan Li, Ping Zhou +5 · 2 citations
Computer Science · Mathematics · Physics and Astronomy · #Algorithm #Combinatorics #Computer science #Greenberger–Horne–Zeilinger state #Mathematics #Multipartite #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum entanglement #Quantum mechanics #Quantum optics and atomic interactions #Quantum teleportation #Qubit #State (computer science) #Superdense coding #Teleportation #Topology (electrical circuits) #W state #quant-ph

paper · pdf · doi:10.1088/0953-4075/39/8/015

published as J. Phys. B: At. Mol. Opt. Phys. 39 (2006) 1975-1983 · 6 pages, no figures; It simplifies the process for sharing an arbitrary m-qubit state in Phys. Rev. A 72, 022338 (2005) (quant-ph/0501129)

openalex publication_date 2006/04/05 · arxiv created 2006/04/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present a scheme for symmetric multiparty quantum state sharing of an arbitrary m -qubit state with m Greenberger–Horne–Zeilinger states following some ideas from the controlled teleportation (2005 Phys. Rev. A 72 02338). The sender Alice performs m Bell-state measurements on her 2 m particles and the controllers need only take some single-photon product measurements on their photons independently, not multipartite entanglement measurements, which makes this scheme more convenient than the latter. Also it does not require the parties to perform a controlled-NOT gate on the photons for reconstructing the unknown m -qubit state and it is an optimal one as its efficiency for qubits approaches 100% in principle.

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