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运动感应移动波参数放大器在4凯尔文的性能:朝着替代半导体放大器的方向
M Malnou1,2, J Aumentado1, M R Vissers1
1National Institute of Standards and Technology, Boulder, Colorado 80305, USA.
Physical review applied
|November 15, 2023
概括
一个新的动感感应移动波参数放大器 (KITWPA) 为量子计算提供了低功耗替代传统高电子移动性晶体管 (HEMT) 的替代方案. 这种KITWPA实现了卓越的噪声性能,并大大降低了功耗.
科学领域:
- 量子计算和传感是量子计算和传感.
- 低温微波电子产品 低温微波电子产品
- 固态物理 固态物理
背景情况:
- 量子计算和传感中的微波读取架构通常使用高电子流动性晶体管 (HEMT),运行在4K.
- 传统的HEMT表现出极好的噪声性能,但消耗大量功率 (毫瓦),阻碍了可扩展性.
- 在低温温度下减少功耗耗散对于量子技术的发展至关重要.
研究的目的:
- 引入和评估动感感应移动波参数放大器 (KITWPA) 作为低功耗替代HEMTs.
- 评估基于KITWPA的放大链的噪声性能和功耗.
- 展示KITWPA在可扩展量子计算和传感架构中的潜力.
主要方法:
- 使用4K的KITWPA,然后使用70K的HEMT,构建了一个放大链.
- 连锁添加噪声在3.5至5.5GHz的频率范围内进行测量.
- 将KITWPA的射频的功耗消耗与传统HEMT的功耗消耗进行了比较.
主要成果:
- 放大链实现了低链添加噪声的 $T_{\Sigma} = 6.3 \pm 0.5$ K.
- 根据输入温度的影响,KITWPA表现出过度噪声温度为$T_{\text{ex}} = 1.9$ K.
- KITWPA的射频耗电量大约是HEMT的1%左右.
结论:
- 与HEMTs相比,KITWPA展示了低噪音和显著减少功耗的有希望的组合.
- 这些特性使得KITWPA在冷应用中成为半导体放大器的可行替代品.
- KITWPA技术有助于开发更具可扩展性的量子计算和传感系统.
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