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

IF 3.7 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review B Pub Date : 2024-11-08 DOI:10.1103/physrevb.110.184508

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

引用次数: 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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在库仑阻滞作用下，安德烈耶夫电离水平的按需增殖

本文提出了一种以确定方式制备奇奇偶态纳米线约瑟夫森结的机制。该机制包括通过打破库珀对的共振微波驱动产生两个安德烈耶夫电平，以及随后通过相同的驱动使其中一个电平电离。结内残余的库仑斥力允许奇数态的稳健制备。类似的共振过程也可以用来制备偶态的结。我们的理论解释了最近的一项实验[J. J. Wesdorp 等人，Phys. Rev. Lett. 131, 117001 (2023)]。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review B 物理-物理：凝聚态物理

CiteScore

6.70

自引率

32.40%

发文量

审稿时长

3.0 months

期刊介绍： Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide. PRB covers the full range of condensed matter, materials physics, and related subfields, including: -Structure and phase transitions -Ferroelectrics and multiferroics -Disordered systems and alloys -Magnetism -Superconductivity -Electronic structure, photonics, and metamaterials -Semiconductors and mesoscopic systems -Surfaces, nanoscience, and two-dimensional materials -Topological states of matter