为什么射击噪声通常不会检测在半径超导道交叉点中的配对?
Jiasen Niu1, Koen M Bastiaans2, Jian-Feng Ge1
1Leiden Institute of Physics, Leiden University, 2333 CA Leiden, The Netherlands.
Physical review letters
|March 1, 2024
概括
射击噪声光谱可以检测超导体中的电子配对. 然而,典型的中镜交点显示单个电子道 (q=1e) 噪声,由于透明度低的通道,掩盖了配对签名.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子运输是一种量子运输.
背景情况:
- 在道实验中的枪声揭示了载体电荷.
- 超导电子配对可以通过射击噪声 (q=2e vs q=1e) 检测到.
研究的目的:
- 调查美索斯科普超导连接处的射击噪声.
- 通过射击噪声确定电子配对特征是否可观测.
主要方法:
- 使用一种新开发的放大器进行射击噪声测量.
- 分析了在典型的半导体超导连接处的射击噪声.
主要成果:
- 观察到的射击噪声对应于单个电子道 (q=1e),而不是电子配对 (q=2e).
- 证明了透明度控制的噪声,q=1e来自许多透明度较低的道.
结论:
- 典型的美索斯科普超导连接处表现出q=1e噪声,掩盖了配对特征.
- 提供了连接点的设计准则,可以通过射击噪声检测电子配对.
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