A 200dB FoM 4-to-5GHz Cryogenic Oscillator with an Automatic Common-Mode Resonance Calibration for Quantum Computing Applications

📋 论文概要

该论文提出了一种用于量子计算的低温振荡器，在4-5GHz频率下实现了200dB的FoM。通过自动共模谐振校准技术，解决了低温下晶体管1/f噪声恶化导致的相位噪声问题。

💡 主要创新点

• 提出自动共模谐振校准技术，动态调整振荡器共模谐振频率以抑制低温下增强的1/f噪声
• 在4-5GHz频率范围内实现200dB FoM，满足量子计算PLL的相位噪声要求（<1.9kHzrms）

🏷 关键词

📄 原文摘要

generation is required for the control electronics of quantum computers. To avoid limiting the performance of quantum bits, the frequency noise of a PLL should be <1.9kHzrms [1]. However, it is challenging for RF oscillators, as the heart of frequency synthesizers to satisfy such a requirement at cryogenic temperatures (CT), since 1) white noise in nanoscale CMOS devices is limited by temperature-independent shot noise; 2) the transistor 1/f noise is much higher, resulting in the oscillator PN being dominated by the 30dB/dec region [1]. Adjusting the oscillator common-mode (CM) resonance at twice the oscillation frequency (FO) is a powerful technique to minimize both white and 1/f noise upconversion in RF oscillators [2-3]. This condition has been previously satisfied

👥 作者与机构

Jiang Gong1, Yue Chen1, Fabio Sebastiano1, Edoardo Charbon2,3, Masoud Babaie1

Delft University of Technology, Delft, The Netherlands EPFL, Lausanne, Switzerland 3 Intel, Hillsboro, OR 1 2 Low-power, low phase noise (PN) cryogenic frequency