An Integrated Deep-Cryogenic Temperature Sensor in CMOS Technology for Quantum Computing Applications

2024/09/10 by Fabio Olivieri, Grayson M. Noah, Olivieri, Fabio +9 · 1 citation
Physics and Astronomy · Engineering · Computer Science · #Advanced Thermodynamics and Statistical Mechanics #Advancements in Semiconductor Devices and Circuit Design #Parallel Computing and Optimization Techniques

paper · pdf · doi:10.48550/arxiv.2409.06838

Abstract

On-chip thermometry at deep-cryogenic temperatures is vital in quantum computing applications to accurately quantify the effect of increased temperature on qubit performance. In this work, we present a sub-1 K temperature sensor in CMOS technology based on the temperature dependence of the critical current of a superconducting (SC) thin-film. The sensor is implemented in 22-nm fully depleted silicon on insulator (FDSOI) technology and comprises a 6 nA resolution current-output digital-to-analog converter (DAC), a transimpedance amplifier (TIA) with a SC thin-film as a gain element, and a voltage comparator. The circuit dissipates 1.5 uW and is demonstrated operating at ambient temperatures as low as 15 mK, providing a variable temperature resolution reaching sub-10 mK.

Cited by

• Deep-Cryogenic Modeling of 22-nm FDSOI MOSFETs based on BSIM-IMG

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