具有SINIS结构的量子电路
Mikhail Tarasov1, Mikhail Fominskii1, Aleksandra Gunbina1
1V. Kotelnikov Institute of Radio Engineering and Electronics RAS, Moscow, Russia.
Beilstein journal of nanotechnology
|November 12, 2025
概括
超导体-绝缘体-普通金属-绝缘体-超导体 (SINIS) 道连接是冷设备的关键. 优化的SINIS阵列实现了检测微波辐射的高响应性,这对于无线电天文学应用至关重要.
科学领域:
- 低温制造器件的制冷制造器件是什么
- 超导电子设备中的超导体.
- 微波检测 微波检测 微波检测 微波检测
背景情况:
- 超导体-绝缘体-普通金属-绝缘体-超导体 (SINIS) 道连接是先进冷应用中的基本组件.
- 这些设备用于微波探测器,电子冷却器,初级温度计和阿哈罗诺夫-博姆干扰仪.
- SINIS设备的制造和测量在低至100mK的温度下进行.
研究的目的:
- 优化SINIS道连接结构,以提高冷设备的灵敏度和响应能力.
- 开发和测试专门用于用于射电天文学的90 GHz辐射检测的SINIS阵列.
- 为了评估SINIS接收器在低温下的冷静装置中的性能.
主要方法:
- 使用多兰型和曼哈顿型阴影蒸发和磁铁子喷射制造SINIS结构.
- 吸收器悬浮在基板上方,以提高最终的灵敏度.
- 使用黑体辐射源,带通波器和IMPATT二极管辐射源测试SINIS阵列.
主要成果:
- 在350 GHz (72000 A/W) 达到每光子高达30个电子的响应能力和高达3.9 × 10^9 V/W的电压响应能力.
- 设计的SINIS阵列在90 GHz辐射检测中显示噪声等效功率低于10^-16 W·Hz^-1/2.
- 在BTA望远镜的纳斯密斯焦点260mK的3He冷机中成功安装和测试了一个SINIS接收器.
结论:
- 优化的SINIS道连接为冷应用提供了显著的灵敏度和响应能力的改进.
- 开发的SINIS阵列适合检测微弱的微波信号,特别是用于90 GHz的无线电天文学.
- 在BTA望远镜的实验设置和测试证实了SINIS设备在天文观测方面的潜力.
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