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

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arxiv 2312.07512 v1 pith:R67O2JQ3 submitted 2023-12-12 cond-mat.mes-hall quant-ph

Pavel D. Kurilovich , Vladislav D. Kurilovich , Aleksandr E. Svetogorov , Wolfgang Belzig , Michel H. Devoret , Leonid I. Glazman This is my paper · ORCID
classification cond-mat.mes-hallquant-ph
keywords junctionlevelsstateandreevcoulombdriveionizationmechanism
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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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