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

Low-power, low phase noise (PN) cryogenic frequency 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 < 1.9 kHz rms [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].

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[2]  Pui-In Mak,et al.  An inverse-class-F CMOS VCO with intrinsic-high-Q 1st- and 2nd-harmonic resonances for 1/f2-to-1/f3 phase-noise suppression achieving 196.2dBc/Hz FOM , 2018, 2018 IEEE International Solid - State Circuits Conference - (ISSCC).

[3]  Robert B. Staszewski,et al.  25.4 A 1/f noise upconversion reduction technique applied to Class-D and Class-F oscillators , 2015, 2015 IEEE International Solid-State Circuits Conference - (ISSCC) Digest of Technical Papers.

[4]  Rinaldo Castello,et al.  Analysis and Design of a 195.6 dBc/Hz Peak FoM P-N Class-B Oscillator With Transformer-Based Tail Filtering , 2015, IEEE Journal of Solid-State Circuits.

[5]  Lin Song,et al.  15.5 Cryo-CMOS circuits and systems for scalable quantum computing , 2017, 2017 IEEE International Solid-State Circuits Conference (ISSCC).