Olivieri, F;
Noah, GM;
Swift, T;
Fernando Gonzalez-Zalba, M;
Morton, JJL;
Gomez-Saiz, A;
(2025)
An Integrated Deep-Cryogenic Temperature Sensor in CMOS Technology for Quantum Computing Applications.
IEEE Transactions on Applied Superconductivity
pp. 1-5.
10.1109/TASC.2025.3536636.
(In press).
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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 >μ W and is demonstrated operating at ambient temperatures as low as 15 mK, providing a variable temperature resolution reaching sub-10 mK.
| Type: | Article |
|---|---|
| Title: | An Integrated Deep-Cryogenic Temperature Sensor in CMOS Technology for Quantum Computing Applications |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TASC.2025.3536636 |
| Publisher version: | https://doi.org/10.1109/tasc.2025.3536636 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Cryo-CMOS, cryogenic electronics, digital-toanalog converter (DAC), fully-depleted silicon-on-insulator (FDSOI), superconducting devices, temperature sensor |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10204663 |
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