QSolid Partners From Thuringia, North Rhine-Westphalia, Saxony And Baden-Württemberg Shape Expert Discussion During Wolte16 In Sicily

This year's 16th Workshop on Low Temperature Electronics (WOLTE16) provided a lively platform for various QSolid partners to present and discuss their research results in low-temperature electronics, quantum computing, CryoCMOS circuits and components and superconducting electronics. The four-day workshop, sponsored by the IEEE for Superconductivity, took place from 3 to 6 June on the Italian island of Sicily and was aimed at leading stakeholders from research, education, industry and business. QSolid was strongly represented by Leibniz IPHT, CiS Forschungsinstitut für Mikrosensorik, Forschungszentrum Jülich, GlobalFoundries, Fraunhofer IPMS and AdMOS.

On day one, Ronny Stolz and Gregor Oelsner (Leibniz IPHT, Jena) together with Thomas Ortlepp (CiS Forschungsinstitut für Mikrosensorik, Erfurt) gave their invited talk on ‘Superconducting digital circuit approaches for control and readout of quantum circuits’ as part of the session on quantum computing. Their presentation aroused great interest, especially among colleagues from the USA and China who were present. Two days later, Ronny Stolz, stepping in for a colleague, presented ‘Quantum phase slips in disordered superconducting NbN thin films’ as part of the session on superconducting electronics. This talk also received a great deal of attention from experts from the National Institute of Standards and Technology (USA).

Besides Leibniz IPHT, the project partners from Forschungszentrum Jülich in particular also shaped the technical discussion in Sicily. On day two, Christian Grewing, Patrick N. Vliex and QSolid co-coordinator Stefan van Waasen enriched the workshop part on CryoCMOS circuits with their presentation ‘QUOCCA SET: A Scalable Readout IC for Semiconductor Quantum Dots Using Single Electron Transistors and Correlated Double Sampling’. One day later, some of the Jülich colleagues continued the exciting insights with ‘A Cryogenic 22nm FD-SOI CMOS 12 Channel DAC for Spin Qubit Bias’ as part of the CryoCMOS components programme.

Concluding the session on CryoCMOS components – from a QSolid perspective – was a group of numerous project colleagues comprising Carsten Degenhardt, Patrick N. Vliex and Stefan van Waasen (ZEA-2, Forschungszentrum Jülich), Heidrun Alius and Thomas Gneiting (AdMOS, Frickenhausen), Peter Javorka and Christian Witt (GlobalFoundries, Dresden) as well as Maximilian Lederer and Maik Simon (Fraunhofer IPMS, Dresden), who reported on ‘Evaluation of Cryogenic Models for FDSOI CMOS Transistors’.

WOLTE16 made an important contribution to the research field of cryogenic electronics – both superconducting and CryoCMOS: current challenges were addressed and discussed with great interest, QSolid was able to establish new contacts and expand existing ones, and the project results compare favourably with those of international scientists. The workshop also enabled colleagues to look beyond the boundaries of their specific project work and helped them to identify new research topics and further develop their own research towards German technological sovereignty.

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