Quantum state sharing
Date
2004
Authors
Lance, Andrew
Symul, Thomas
Bowen, Warwick P
Sanderson, Ronald D
Lam, Ping Koy
Journal Title
Journal ISSN
Volume Title
Publisher
SPIE - The International Society for Optical Engineering
Abstract
We demonstrate a multipartite protocol that utilizes entanglement 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 together, a majority of the players can reconstruct the state, whilst the remaining player obtains nothing. This (2, 3) threshold quantum state sharing scheme is characterized in terms of fidelity (F), signal transfer (T) and reconstruction noise (V). We demonstrate a fidelity averaged over all reconstruction permutations of 0.73 ± 0.04, a level achievable only using quantum resources.
Description
Keywords
Keywords: Entanglement; Optical parametric amplifiers; Quantum information; Quantum network; Quantum secrete sharing; Quantum state sharing; Communication systems; Distributed computer systems; Image reconstruction; Internet; Light amplifiers; Quantum cryptography; Entanglement; Optical parametric amplifier; Quantum cryptography; Quantum information; Quantum network; Quantum secret sharing; Quantum state sharing
Citation
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Source
Proceedings of the SPIE: Fluctuations and Noise in Phontonics and Quantum Optics II
Type
Conference paper