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Mileti, Gaetano

Nom
Mileti, Gaetano
Affiliation principale
Site web
Fonction
Professeur titulaire
Email
gaetano.mileti@unine.ch
Identifiants
https://libra.unine.ch/handle/123456789/479
_
0000-0002-9020-3674

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  • Publication
    Accès libre
    Light effects in the atomic-motion-induced Ramsey narrowing of dark resonances in wall-coated cells
    (2010)
    Breschi, Evelina
    ;
    Kazakov, G.
    ;
    Schori, Christian 
    ;
    Di Domenico, Gianni 
    ;
    Mileti, Gaetano 
    ;
    Litvinov, A.
    ;
    Matisov, B.
    We report on light shift and broadening in the atomic-motion-induced Ramsey narrowing of dark resonances prepared in alkali-metal vapors contained in wall-coated cells without buffer gas. The atomic-motion-induced Ramsey narrowing is due to the free motion of the polarized atomic spins in and out of the optical interaction region before spin relaxation. As a consequence of this effect, we observe a narrowing of the dark resonance linewidth as well as a reduction of the ground states’ light shift when the volume of the interaction region decreases at constant optical intensity. The results can be intuitively interpreted as a dilution of the intensity effect similar to a pulsed interrogation due to the atomic motion. Finally the influence of this effect on the performance of compact atomic clocks is discussed.
  • Publication
    Accès libre
    Influence of laser sources with different spectral properties on the performance of vapor cell atomic clocks based on lin‖lin CPT
    (2009)
    Breschi, Evelina
    ;
    Kazakov, G.
    ;
    Lammegger, R.
    ;
    Matisov, B.
    ;
    Windholz. L.
    ;
    Mileti, Gaetano 
    We evaluate the influence of 2 types of laser sources with different spectral profiles on the performance of vapor cell atomic clocks based on lin
  • Publication
    Accès libre
    Quantitative study of the destructive quantum-interference effect on coherent population trapping
    (2009)
    Breschi, E.
    ;
    Kazakov, G.
    ;
    Lammegger, R.
    ;
    Mileti, Gaetano 
    ;
    Matisov, B.
    ;
    Windholz. L.
    We investigate experimentally and theoretically the coherent population trapping (CPT) effect occurring in 87Rb D1 line due to the interaction with linearly polarized laser light (lin∥lin CPT). In this configuration, the coherence is strongly influenced by the structure of the excited state; consequently, the quantum interference between dark states is an essential feature of this interaction scheme. We study the lin∥lin CPT resonance as a function of the laser optical detuning. The comparison between experimental and theoretical results allows us to quantify the contribution from different dark states to the total signal. Based on these results, we investigate the signal depending on both the pressure broadening of the optical transition and the laser linewidth, and we find in which conditions the laser linewidth does not degrade the lin∥lin CPT resonance.