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arXiv · 2312.07512

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

Pavel D. Kurilovich·Vladislav D. Kurilovich·Aleksandr E. Svetogorov·Wolfgang Belzig·Michel H. Devoret·Leonid I. Glazman
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Abstract

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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Pavel D. Kurilovich, Vladislav D. Kurilovich, Aleksandr E. Svetogorov, Wolfgang Belzig, Michel H. Devoret, Leonid I. Glazman. 2023-12-12. On-demand population of Andreev levels by their ionization in the presence of Coulomb blockade. https://arxiv.org/abs/2312.07512

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