Control of decoherence via quantum Zeno subspaces

Paolo Facchi, Hiromichi Nakazato, Saverio Pascazio, Shuichi Tasaki

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    We discuss three control strategies, whose objective is to counter the effects of decoherence: the first strategy hinges upon the quantum Zeno effect, the second makes use of frequent unitary interruptions ("bang-bang" pulses), and the third of a strong, continuous coupling. Decoherence can be suppressed only if the frequency τ-1 of the measurements/pulses is large enough or if the coupling K is sufficiently strong. Otherwise, if τ-1 or K are large, but not sufficiently large, all these control procedures accelerate decoherence.

    Original languageEnglish
    Pages (from-to)1408-1420
    Number of pages13
    JournalInternational Journal of Modern Physics B
    Volume20
    Issue number11-13
    DOIs
    Publication statusPublished - 2006 May 20

    Fingerprint

    Decoherence
    Subspace
    hinges
    interruption
    Hinges
    pulses
    counters
    Accelerate
    Control Strategy

    Keywords

    • Control
    • Decoherence
    • Dissipation
    • Quantum Zeno effect

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)
    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials
    • Statistical and Nonlinear Physics
    • Mathematical Physics

    Cite this

    Control of decoherence via quantum Zeno subspaces. / Facchi, Paolo; Nakazato, Hiromichi; Pascazio, Saverio; Tasaki, Shuichi.

    In: International Journal of Modern Physics B, Vol. 20, No. 11-13, 20.05.2006, p. 1408-1420.

    Research output: Contribution to journalArticle

    Facchi, Paolo ; Nakazato, Hiromichi ; Pascazio, Saverio ; Tasaki, Shuichi. / Control of decoherence via quantum Zeno subspaces. In: International Journal of Modern Physics B. 2006 ; Vol. 20, No. 11-13. pp. 1408-1420.
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