Microwaves in Quantum Computing webinar series – Part 1
About
The growing field of quantum computing relies on a broad range of microwave technologies and has spurred development of microwave devices and methods in new operating regimes. But despite the significant progress made in the last decade in the science, engineering and characterisation of quantum computation systems, several challenges remain to be overcome before quantum computation can become practically usable.
The challenges of realising practical large-scale quantum computing systems present microwave engineers and researchers with opportunities in cryogenic microwave design, fabrication, measurement, and characterisation of cryogenic semiconductor and superconductor components, systems, and networks.
This two-part webinar series will bring together international experts from quantum and microwave industry and academia. Recent standardisation activities will also be covered which will be critical to accelerate commercialisation of quantum computing technologies.
Relevant engineering disciplines and topics include electrical engineering, microwave engineering, microwave measurements, quantum engineering, standardisation and cryogenics.
1
Continuing Professional Development
This event can contribute towards your Continuing Professional Development (CPD) hours as part of the IET's CPD monitoring scheme.
23 Oct 2025
2:00pm - 3:00pm
Organiser
- RF and Microwave TN
Speakers
Grayson Noah
Lead IC Validation Engineer - Quantum Motion
Grayson has led the Quantum Integration and Validation team at Quantum Motion since 2021.
He received his Bachelor's degree in electrical engineering and Master's specialising in optics, both from Georgia Tech. Prior to joining Quantum Motion, Grayson was a Product Engineer at Texas Instruments where he developed automated SoC tests and latch-up testing procedures.
His current focuses include cryo-CMOS RF and mixed-signal measurement and modelling, deep-cryogenic thermometry and thermal modelling, and scalable quantum system hardware development.
Dr Stavroula Kapoulea
Postdoctoral Research Associate - University of Glasgow
Dr. Stavroula Kapoulea holds the position of Postdoctoral Research Associate specializing in cryogenic nanoelectronics for quantum computing at the James Watt School of Engineering, University of Glasgow.
Her academic background includes a BSc degree in Physics, an MSc in Electronics, and a PhD focused on the development of advanced analog integrated circuits, all obtained from the University of Patras in 2016, 2018, and 2022 respectively. Her current research focuses on the development of cryogenic electronics utilizing low-power CMOS nanoscale technology to enable efficient multi-qubit control and readout. The overarching objective is establishing an energy-efficient cryogenic qubit control and readout interface for scalable quantum computing systems.
She has authored/co-authored 52 peer-reviewed journal publications and conference proceedings, and three book chapters, while she is a reviewer for several journals and international conferences. Dr. Kapoulea was awarded the 2018 Armen H. Zemanian Best Paper Award in the area of Circuits and Systems in the Circuits and Signal Processing Journal and the Best Paper Award for 2021 in the International Journal of Electronics and Communications (AEUE) Journal, Elsevier, 2021.
Programme
Achieving scalable, fast, and high-fidelity RF readout of industrially fabricated spin qubits
In recent years, spin qubits in silicon have demonstrated fidelities comparable to state-of-the-art figures from other qubit technology platforms (such as superconducting qubits) across all quantum operations, prompting a more focused effort on the scaling up of silicon spin qubit architectures. Readout of spin qubits can be achieved through RF reflectometry measurement of a qubit structure embedded within a resonator.
This talk will examine the requirements for scaling up readout capabilities to support large numbers of spin qubits, highlighting recent developments in design and integration of key hardware components such as resonators, RF switches, and low-noise amplifiers.
Speaker: Grayson Noah. Lead IC Validation Engineer, Quantum Motion.
Cryoelectronics for Quantum Computing
Quantum computers are rapidly scaling towards qubit numbers at which they achieve quantum advantage over classical ones, a key objective for developing practical quantum computing systems. A major hurdle to full-scale deployment is the interfacing of cryogenic quantum processors with roomtemperature control and readout electronics. As quantum systems scale toward the anticipated millions of qubits required for fault-tolerant quantum advantage, the number of connections required to individually address each qubit increases significantly. This interconnection scaling reaches a physical impasse, as the volume required to accommodate the increasing number of electrical RF connections becomes prohibitive and introduces unwanted thermal load from the room-temperature electronics into the cryogenic environment.
Cryogenic complementary metal-oxide-semiconductor (cryo-CMOS) nanoscale technology is a leading emerging tool for achieving the coveted scalability and developing multi-qubit computing System-on-Chip (SoC). CMOS technology is particularly suitable for enabling quantum computing hardware, due to its compatibility with nanoscale, low-voltage operation requirements and its potential for seamless on-chip integration. However, a major drawback remains the lack of cryogenic device models and Process Design Kits (cryo-PDKs), which hinders the reliable design and simulation-level validation of cryo-CMOS circuits.
In this talk, we address this critical bottleneck by leveraging the fully depleted silicon-on-insulator (FD-SOI) CMOS technology, which allows for restoring the hardware performance affected by the challenging cryogenic conditions.
Speaker: Dr Stavroula Kapoulea, Postdoctoral Research Associate, University of Glasgow.