Phys. Rev. Lett. 92, 177903 (2004) [4 pages]Tripartite Quantum State SharingReceived 4 November 2003; published 29 April 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.177903
DOI:
10.1103/PhysRevLett.92.177903
PACS:
03.67.Hk, 03.67.Dd, 42.65.Lm
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.