Coherent Detection of Electron Dephasing

Elia Strambini, L. Chirolli, V. Giovanetti, F. Taddei, R. Fazio, V. Piazza

    Research output: Contribution to journalArticleAcademicpeer-review

    8 Citations (Scopus)
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    Abstract

    We show that an Aharonov-Bohm ring with asymmetric electron injection can act as a coherent detector of electron dephasing. The presence of a dephasing source in one of the two arms of a moderately-tohighly asymmetric ring changes the response of the system from total reflection to complete transmission while preserving the coherence of the electrons propagating from the ring, even for strong dephasing. We interpret this phenomenon as an implementation of an interaction-free measurement.
    Original languageUndefined
    Pages (from-to)170403
    Number of pages4
    JournalPhysical review letters
    Volume104
    Issue number17
    DOIs
    Publication statusPublished - Apr 2010

    Keywords

    • EWI-19582
    • IR-75995
    • METIS-275930

    Cite this

    Strambini, E., Chirolli, L., Giovanetti, V., Taddei, F., Fazio, R., & Piazza, V. (2010). Coherent Detection of Electron Dephasing. Physical review letters, 104(17), 170403. https://doi.org/10.1103/PhysRevLett.104.170403
    Strambini, Elia ; Chirolli, L. ; Giovanetti, V. ; Taddei, F. ; Fazio, R. ; Piazza, V. / Coherent Detection of Electron Dephasing. In: Physical review letters. 2010 ; Vol. 104, No. 17. pp. 170403.
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    Strambini, E, Chirolli, L, Giovanetti, V, Taddei, F, Fazio, R & Piazza, V 2010, 'Coherent Detection of Electron Dephasing', Physical review letters, vol. 104, no. 17, pp. 170403. https://doi.org/10.1103/PhysRevLett.104.170403

    Coherent Detection of Electron Dephasing. / Strambini, Elia; Chirolli, L.; Giovanetti, V.; Taddei, F.; Fazio, R.; Piazza, V.

    In: Physical review letters, Vol. 104, No. 17, 04.2010, p. 170403.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Coherent Detection of Electron Dephasing

    AU - Strambini, Elia

    AU - Chirolli, L.

    AU - Giovanetti, V.

    AU - Taddei, F.

    AU - Fazio, R.

    AU - Piazza, V.

    N1 - 10.1103/PhysRevLett.104.170403

    PY - 2010/4

    Y1 - 2010/4

    N2 - We show that an Aharonov-Bohm ring with asymmetric electron injection can act as a coherent detector of electron dephasing. The presence of a dephasing source in one of the two arms of a moderately-tohighly asymmetric ring changes the response of the system from total reflection to complete transmission while preserving the coherence of the electrons propagating from the ring, even for strong dephasing. We interpret this phenomenon as an implementation of an interaction-free measurement.

    AB - We show that an Aharonov-Bohm ring with asymmetric electron injection can act as a coherent detector of electron dephasing. The presence of a dephasing source in one of the two arms of a moderately-tohighly asymmetric ring changes the response of the system from total reflection to complete transmission while preserving the coherence of the electrons propagating from the ring, even for strong dephasing. We interpret this phenomenon as an implementation of an interaction-free measurement.

    KW - EWI-19582

    KW - IR-75995

    KW - METIS-275930

    U2 - 10.1103/PhysRevLett.104.170403

    DO - 10.1103/PhysRevLett.104.170403

    M3 - Article

    VL - 104

    SP - 170403

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    Strambini E, Chirolli L, Giovanetti V, Taddei F, Fazio R, Piazza V. Coherent Detection of Electron Dephasing. Physical review letters. 2010 Apr;104(17):170403. https://doi.org/10.1103/PhysRevLett.104.170403