Journal
2022 INTERNATIONAL ELECTRON DEVICES MEETING, IEDM
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/IEDM45625.2022.10019536
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Funding
- NCCR SPIN, a National Centre of Competence in Research - Swiss National Science Foundation [51NF40-180604]
- European Union [871764]
- SNF Ambizione
- BRNC
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We demonstrate cryogenic switching devices based on HEMT technology for scalable quantum computer control and readout signal routing. These devices, implemented in a quantum well network design, exhibit steep cryogenic subthreshold swing, fast switching, high on/off ratio, and low isolation leakage. Our results suggest that HEMT-based switching circuits could offer advantages over Si CMOS for future high-density ultra-low power quantum computer signal routing.
We demonstrate cryogenic switching devices based on HEMT technology for scalable quantum computer (QC) control and readout signal routing. The switches are implemented in a quantum well network design without metal contacts between gates, and exhibit extremely steep cryogenic subthreshold swing of similar to 5 mV/decade, fast switching, along with on/off ratio of 10(7) and isolation leakage of 10 pA/mu m. The use of a Pt gate metal layer that diffuses into the gate barrier is shown to significantly enhance subthreshold properties. The results indicate that HEMT-based switching circuits could offer advantages over Si CMOS at cryogenic temperatures for future high-density ultra-low power QC signal routing.
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