Pushing the Frontiers of Adiabatic Superconductor Digital Electronics
October 16 (Thursday), 2025
11:30 am to 12:30 pm (EDT)
Virtual via Zoom
Abstract: Adiabatic quantum-flux-parametron (AQFP) superconductor logic is emerging as a promising alternative to conventional CMOS technology, addressing the rising computational demands of IoT and big data. Utilizing a 10 kA/cm² unshunted Nb/AlOx/Nb Josephson junction process, AQFP circuits achieve sub-50kT energy dissipation per device per cycle at 5 GHz. The successful demonstration of the AQFP microprocessor “MANA”, with over 20k Josephson junctions, revealed key areas for further developing AQFP technology including latency, circuit density, and interconnect challenges. In this talk, Dr. Ayala will highlight advances in AQFP technology made at YNU for practical, high-performance applications such as hybrid digital-RF systems, hybrid superconductor logic systems, quantum computing, and specialized accelerators for cryptography.
Biography: Christopher L. Ayala received his Ph.D. in Computer Engineering in 2012 from Stony Brook University for research in rapid single-flux-quantum logic. He held positions at NVIDIA and IBM Research Europe: Zurich before joining the Institute of Advanced Sciences, Yokohama National University in 2015 where he has been an associate professor. He is now the head of cryoelectronics at Atlantic Quantum with a joint visiting professor appointment at Yokohama National University. His main research interests are in superconductor electronics and NEMS-MEMS devices for applications in energy-efficient compute and quantum processor control and readout.