在混合Josephson连接电路中高波的电压控制合成
L Banszerus1, W Marshall1,2, C W Andersson1
1Center for Quantum Devices, Niels Bohr Institute, <a href="https://ror.org/035b05819">University of Copenhagen</a>, 2100 Copenhagen, Denmark.
Physical review letters
|November 15, 2024
概括
我们测量了两个混合Josephson连接的电流相位关系. 门电压控制调整了它们的和声内容,显示了与系列模型的一致性.
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
- 材料科学 材料科学 材料科学
背景情况:
- 约瑟夫森连接 (JJs) 是量子电子学的基础.
- 半导体-超导体混合系统提供可调节的JJ特性.
- 了解当前阶段关系是JJ应用的关键.
研究的目的:
- 为了研究串联混合Josephson连接处的电流相位关系.
- 探索对约瑟夫森合器和波内容的门电压控制.
- 为了验证两个常规JJ系列的模型.
主要方法:
- 制造和测量电压控制的半导体-超导体混合约瑟夫森连接器.
- 两个混合Josephson连接点的串联连接.
- 通过网关电压调来描述电流相位关系和切换电流.
主要成果:
- 系列混合连接表现出类似于单个JJ的行为.
- 有效的透明度是由单个约瑟夫森合强度的比率决定的.
- 门电压控制允许调整从正弦到非正弦波内容.
- 观察到的可调节波含量与两个系列JJs的理论预测相匹配.
结论:
- 网关电压控制提供了一种调整混合约瑟夫森接口波内容的方法.
- 系列混合JJs的行为可以通过传统JJs有效地建模.
- 这项工作促进了对混合约瑟夫森连接特性的理解和控制.
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