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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2005

Dephasing by a nonstationary classical intermittent noise

Résumé

We consider a phenomenological model for a 1∕fμ classical intermittent noise and study its effects on the dephasing of a two-level system. Within this model, the evolution of the relative phase between the ∣±⟩ states is described as a continuous time random walk (CTRW). Using renewal theory, we find exact expressions for the dephasing factor and identify the physically relevant various regimes in terms of the coupling to the noise. In particular, we point out the consequences of the nonstationarity and pronounced non-Gaussian features of this noise, including some anomalous and aging dephasing scenarios.
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Dates et versions

hal-00641673 , version 1 (16-11-2011)

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Josef Schriefl, Maxime Clusel, David Carpentier, Pascal Degiovanni. Dephasing by a nonstationary classical intermittent noise. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2005, 72, pp.035328. ⟨10.1103/PhysRevB.72.035328⟩. ⟨hal-00641673⟩
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