On-demand population of Andreev levels by their ionization in the
presence of Coulomb blockade
- URL: http://arxiv.org/abs/2312.07512v1
- Date: Tue, 12 Dec 2023 18:45:34 GMT
- Title: On-demand population of Andreev levels by their ionization in the
presence of Coulomb blockade
- Authors: Pavel D. Kurilovich, Vladislav D. Kurilovich, Aleksandr E. Svetogorov,
Wolfgang Belzig, Michel H. Devoret, Leonid I. Glazman
- Abstract summary: 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.
- Score: 39.58317527488534
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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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