Robust multipartite multilevel quantum protocols

Journal Article · Mon Aug 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.022337· OSTI ID:20718096

Nihira, Hideomi; Stroud, Jr, C R ^[1]

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1. The Institute of Optics, University of Rochester, Rochester, New York 14627 (United States)

We present a quantum protocol utilizing a tripartite three-level state. The state used in this scheme contains entanglement even after one system is traced out and as a result can be used for both a secret-sharing protocol among the three parties and a quantum-key-distribution protocol between any two parties. We show how to utilize this residual entanglement for quantum-key-distribution purposes, and explore a possible realization of the scheme using entanglement of orbital-angular-momentum states of photons.

• OSTI ID: 20718096
• Journal Information: Physical Review. A, Vol. 72, Issue 2; Other Information: DOI: 10.1103/PhysRevA.72.022337; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
DISTRIBUTION
ENERGY LEVELS
INFORMATION THEORY
OPTICS
ORBITAL ANGULAR MOMENTUM
PHOTONS
QUANTUM CRYPTOGRAPHY
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS