Tripartite quantum state Sharing

Andrew M. Lance; Thomas Symul; Warwick P. Bowen; Barry C. Sanders; Ping Koy Lam

doi:10.1103/PhysRevLett.92.177903

Tripartite quantum state Sharing

Andrew M. Lance^*, Thomas Symul, Warwick P. Bowen, Barry C. Sanders, Ping Koy Lam

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

476 Citations (Scopus)

Abstract

A multipartite protocol to securely distribute and reconstruct a quantum state was analyzed. A secret quantum state was distributed to three players. It was shown that by collaborating, any two of the three players can reconstruct the state, while individual players obtain nothing. This (2,3) threshold quantum state sharing scheme was characterized in terms of fidelity, signal transfer and reconstruction noise. It was found that fidelity averaged over all reconstruction permutations of 0.73±0.04, a level achievable only using quantum resources.

Original language	English
Article number	177903
Pages (from-to)	177903-1-177903-4
Journal	Physical Review Letters
Volume	92
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.92.177903
Publication status	Published - 30 Apr 2004

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10.1103/PhysRevLett.92.177903

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abstract = "A multipartite protocol to securely distribute and reconstruct a quantum state was analyzed. A secret quantum state was distributed to three players. It was shown that by collaborating, any two of the three players can reconstruct the state, while individual players obtain nothing. This (2,3) threshold quantum state sharing scheme was characterized in terms of fidelity, signal transfer and reconstruction noise. It was found that fidelity averaged over all reconstruction permutations of 0.73±0.04, a level achievable only using quantum resources.",

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AB - A multipartite protocol to securely distribute and reconstruct a quantum state was analyzed. A secret quantum state was distributed to three players. It was shown that by collaborating, any two of the three players can reconstruct the state, while individual players obtain nothing. This (2,3) threshold quantum state sharing scheme was characterized in terms of fidelity, signal transfer and reconstruction noise. It was found that fidelity averaged over all reconstruction permutations of 0.73±0.04, a level achievable only using quantum resources.

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Tripartite quantum state Sharing

Abstract

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