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On-demand population of Andreev levels by their ionization in the presence of Coulomb blockade

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2023

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Deutsche Forschungsgemeinschaft (DFG): 425217212
Deutsche Forschungsgemeinschaft (DFG): 467596333
Deutsche Forschungsgemeinschaft (DFG): 465140728

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A mechanism to deterministically prepare a nanowire Josephson junction in an odd parity state is proposed. The mechanism involves population of two Andreev levels by a resonant microwave drive breaking a Cooper pair, and a subsequent ionization of one of the levels by the same drive. Robust preparation of the odd state is allowed by a residual Coulomb repulsion in the junction. A similar resonant process can also be used to prepare the junction in the even state. Our theory explains a recent experiment [J. J. Wesdorp, et al., Phys. Rev. Lett. 131, 117001 (2023)].

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530 Physik

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Mesoscale and Nanoscale Physics, Josephson junction, Andreev levels

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ISO 690KURILOVICH, Pavel D., Vladislav D. KURILOVICH, Aleksandr SVETOGOROV, Wolfgang BELZIG, Michel H. DEVORET, Leonid I. GLAZMAN, 2023. On-demand population of Andreev levels by their ionization in the presence of Coulomb blockade
BibTex
@unpublished{Kurilovich2023-12-12Ondem-68739,
  year={2023},
  doi={10.48550/arXiv.2312.07512},
  title={On-demand population of Andreev levels by their ionization in the presence of Coulomb blockade},
  author={Kurilovich, Pavel D. and Kurilovich, Vladislav D. and Svetogorov, Aleksandr and Belzig, Wolfgang and Devoret, Michel H. and Glazman, Leonid I.}
}
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