Pulsed low-noise amplifiers for quantum information systems
| Reference number | |
| Coordinator | Chalmers Tekniska Högskola AB - Chalmers Tekniska Högskola Inst f Mikroteknologi & nanovetensk |
| Funding from Vinnova | SEK 2 820 000 |
| Project duration | July 2022 - December 2024 |
| Status | Ongoing |
| Venture | The strategic innovation programme Electronic Components and Systems: |
| Call | Electronic components & systems - research and innovation projects 2022 |
Important results from the project
The aim was to demonstrate a pulsed HEMT LNA with very low power dissipation targeted for quantum computer systems, i.e. amplification in C-band at temperatures around 4 K. Results: 1. The concept and technical goals were achieved, which we were the first in the world to demonstrate. 2. New noise measurement methodology. 3. Three scientific contributions and a PhD thesis. 4. The company has been given a new opportunity to further develop its low-power products.
Expected long term effects
The results from this project can be used in: - Low-power LNAs in scaled-up quantum information systems that handle hundreds of thousands of qubits. - Large detector arrays for radar or other antennas. - The transient noise measurement methodology can be commercialized by leading measurement companies in the microwave industry. - Other groups in academia and industry will test the concept for other semiconductor transistors and amplifier types, e.g. GaN HEMT LNA intended for radar.
Approach and implementation
The project has been carried out over 30 months in five work packages. Overall, the original project plan has been well fulfilled. The noise source did not need to be developed in WP3. Development of and measurement in the test bed for the final cryogenic test in WP5 could not be carried out at LNF as planned but was carried out at Chalmers. This was because the crucial high-speed oscilloscope was only available at Chalmers.