Tripartite Quantum State Sharing

Lance, Andrew M., Symul, Thomas, Bowen, Warwick P., Sanders, Barry C. and Lam, Ping Koy (2004) Tripartite Quantum State Sharing. Physical Review Letters, 92 17: 177903-1-177903-4. doi:10.1103/PhysRevLett.92.177903

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Author Lance, Andrew M.
Symul, Thomas
Bowen, Warwick P.
Sanders, Barry C.
Lam, Ping Koy
Title Tripartite Quantum State Sharing
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2004-04-30
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.92.177903
Open Access Status File (Publisher version)
Volume 92
Issue 17
Start page 177903-1
End page 177903-4
Total pages 5
Place of publication New York
Publisher American Physical Society
Language eng
Subject 020603 Quantum Information, Computation and Communication
020604 Quantum Optics
Abstract We demonstrate a multipartite protocol to securely distribute and reconstruct a quantum state. A secret quantum state is encoded into a tripartite entangled state and distributed to three players. By collaborating, any two of the three players can reconstruct the state, while individual players obtain nothing. We characterize this (2,3) threshold quantum state sharing scheme in terms of fidelity, signal transfer, and reconstruction noise. We demonstrate a fidelity averaged over all reconstruction permutations of 0.73+/-0.04, a level achievable only using quantum resources.
Keyword Physics, Multidisciplinary
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 313 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 304 times in Scopus Article | Citations
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Created: Mon, 04 Aug 2008, 11:20:23 EST by Laura McTaggart on behalf of School of Mathematics & Physics