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Interplay of charge and spin coherence in Landau-Zener-Stückelberg-Majorana interferometry

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2013

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Petta, Jason R.

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http://nbn-resolving.de/urn:nbn:de:bsz:352-248022
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http://arxiv.org/abs/1210.1957

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We study Landau-Zener dynamics in a double quantum dot filled with two electrons, where the spin states can become correlated with charge states and the level velocity can be tuned in a time-dependent fashion. We show that a correct interpretation of experimental data is only possible when finite-time effects are taken into account. In addition, our formalism allows the study of partial adiabatic dynamics in the presence of phonon-mediated hyperfine relaxation and charge-noise-induced dephasing. Our findings demonstrate that charge noise severely impacts the visibility of Landau-Zener-Stückelberg-Majorana interference fringes. This indicates that charge coherence must be treated on an equal footing with spin coherence.

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530 Physik

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ISO 690RIBEIRO, Hugo, Jason R. PETTA, Guido BURKARD, 2013. Interplay of charge and spin coherence in Landau-Zener-Stückelberg-Majorana interferometry
BibTex
@unpublished{Ribeiro2013Inter-24802,
  year={2013},
  title={Interplay of charge and spin coherence in Landau-Zener-Stückelberg-Majorana interferometry},
  author={Ribeiro, Hugo and Petta, Jason R. and Burkard, Guido}
}
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