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Phys. Rev. Lett. 89, 100402 (2002) [4 pages]

N-Particle N-Level Singlet States: Some Properties and Applications

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Adán Cabello *
Departamento de Física Aplicada II, Universidad de Sevilla, 41012 Sevilla, Spain

Received 29 March 2002; published 19 August 2002

Three apparently unrelated problems which have no solution using classical tools are described: the “N-strangers,” “secret sharing,” and “liar detection” problems. A solution for each of them is proposed. Common to all three solutions is the use of quantum states of total spin zero of N spin-(N-1)/2 particles.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.89.100402
DOI: 10.1103/PhysRevLett.89.100402
PACS: 03.67.Hk, 02.50.Le, 03.65.Ud, 03.67.Dd

* Electronic address: adan@us.es

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