非互惠的约瑟夫森线性反应
Pauli Virtanen1, Tero T Heikkilä1
1Department of Physics and Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä, Finland.
Physical review letters
|February 9, 2024
概括
这项研究表明,与静态的约瑟夫森二极管不同,多终端约瑟夫森连接处在有限频率上表现出线性非互惠性. 这一发现使得使用微波传输开发高效,小规模的芯片循环器成为可能.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子电子学 量子电子学
- 介面镜物理学的物理
背景情况:
- 约瑟夫森连接是超导电子的关键组件.
- 静态的约瑟夫森二极管表现出非线性非互惠.
- 了解有限频响应对于高级应用至关重要.
研究的目的:
- 为了研究多终端约瑟夫森连接的有限频响应.
- 探索这些系统中线性非互惠的出现.
- 确定这种非互惠行为的潜在应用.
主要方法:
- 对多终端约瑟夫森连接器有限频率响应的分析.
- 纳入了对约瑟夫森入学的动态贡献.
- 考虑安德里耶夫结合状态过渡和贝里相效应.
主要成果:
- 在有限频Josephson连接的线性响应中观察到的非互惠性.
- 对约瑟夫森入门的动态贡献包括安德里耶夫结合状态和贝里相效应.
- 在精确的安德里耶夫共振之外观察到的非互惠的反应反应.
- 非吸收式微波传输和几乎完全的电磁分散非互惠性.
结论:
- 有限频的约瑟夫森连接表现出线性非互惠性,与静态二极管不同.
- 这种非互惠性可以用来创造高效的,小规模的芯片循环器.
- 开发的系统只需要适度的磁场才能运行.
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