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Title: Optimal estimation of two-qubit pure-state entanglement
Author: Acín dal Maschio, Antonio
Tarrach, R., 1948-
Vidal Bonafont, Guifré
Keywords: Teoria de la informació
Teoria quàntica
Information theory
Quantum theory
Issue Date: 2000
Publisher: The American Physical Society
Abstract: We present optimal measuring strategies for an estimation of the entanglement of unknown two-qubit pure states and of the degree of mixing of unknown single-qubit mixed states, of which N identical copies are available. The most general measuring strategies are considered in both situations, to conclude in the first case that a local, although collective, measurement suffices to estimate entanglement, a nonlocal property, optimally.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review A, 2000, vol. 61, núm. 6, p. 062307.
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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