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Title: Optimal generalized quantum measurements for arbitrary spin systems
Author: Acín dal Maschio, Antonio
Latorre, José Ignacio
Pascual, Pedro, 1934-2006
Keywords: Mecànica quàntica
Teoria de la informació
Quantum mechanics
Quantum information
Issue Date: 2000
Publisher: The American Physical Society
Abstract: Positive-operator-valued measurements on a finite number of N identically prepared systems of arbitrary spin J are discussed. Pure states are characterized in terms of Bloch-like vectors restricted by a SU(2J+1) covariant constraint. This representation allows for a simple description of the equations to be fulfilled by optimal measurements. We explicitly find the minimal positive-operator-valued measurement for the N=2 case, a rigorous bound for N=3, and set up the analysis for arbitrary N.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review A, 2000, vol. 61, núm. 2.
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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