Title:
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Optimal generalized quantum measurements for arbitrary spin systems
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Author:
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Acín dal Maschio, Antonio; Latorre, José Ignacio; Pascual, Pedro, 1934-2006
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Mecànica quàntica -Teoria de la informació -Quantum mechanics -Quantum information |
Rights:
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(c) The American Physical Society, 2000
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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