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  • PACS: 03.67.-a; 03.65.-w  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    On universal quantum cloning and state estimation (1999)
    Springer
    Applied physics 69 (1999), S. 401-405 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 03.67.-a; 03.65.-w
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Both perfect cloning and perfect state estimation of an unknown pure quantum state are impossible, due to principles of quantum mechanics. Nevertheless, they can be performed imperfectly. A link between these two scenarios allows us to derive an upper bound for the fidelity in one of them, given an upper bound is known in the other. Furthermore, it is shown that also a lower bound on cloning is related to an upper bound on state estimation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400050826
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