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Landau-Zener transitions in the presence of harmonic noise

Kraft, Matthias and Burkhardt, Stephan and Mannella, Riccardo and Wimberger, Sandro (2013) Landau-Zener transitions in the presence of harmonic noise. arXiv . (In Press)

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SUMMARY We study the influence of off-diagonal harmonic noise on transitions in a Landau-Zener model. We demonstrate that the harmonic noise can change the transition probabilities substantially and that its impact depends strongly on the characteristic frequency of the noise. In the underdamped regime of the noise process, its effect is compared with the one of a deterministic sinusoidally oscillating function. While altering the properties of the noise process allows one to engineer the transitions probabilities, driving the system with a deterministic sinusoidal function can result in larger and more controlled changes of the transition probability. This may be relevant for realistic implementations of our model with Bose-Einstein condensates in noise-driven optical lattices.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/03 - Fisica della materia
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 30 Jul 2013 13:01
Last Modified: 30 Jul 2013 13:01
URI: http://eprints.adm.unipi.it/id/eprint/1285

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