Advancing Superconducting Electronics for Server Applications

The field of superconducting electronics, especially using Josephson junctions (JJs), promises significant advancements in high-speed computing with lower power needs. The technology has made notable progress, with circuits comprising nearly one million JJs achieving clock frequencies in the tens of GHz range. These developments offer minimal power dissipation compared to traditional silicon circuits, easing thermal management challenges and enabling higher circuit densities. Despite these benefits, significant hurdles like integration barriers persist, primarily due to the approximate 250 nm feature sizes of circuits, which are considerably larger than modern silicon technologies. This discrepancy restricts the complexity of superconducting circuits and poses challenges in scaling due to limitations in current materials and processing methods.

This Research Topic aims to explore new materials and methodological advancements to address the key challenges in superconducting electronics. By focusing on overcoming integration issues and enhancing circuit density, this topic seeks to establish superconducting electronics as a viable alternative to silicon-based technologies. The emphasis will be on developing new material stacks and processing techniques that enhance uniformity and thermal stability, crucial for scaling down features and increasing circuit efficiency.

To gather further insights in reducing the physical and operational limitations of superconducting electronics, we welcome articles addressing, but not limited to, the following themes:
· Superconducting metal deposition and uniformity
· Barrier oxide formation and uniformity
· Scalable formation of Josephson Junctions
· Management with new processing of parasitics in superconducting electronics
· Thermal stability and the use of higher-temperature compatible materials.

Each submission should aim to contribute to the overarching goal of advancing the performance, efficiency, and applicability of superconducting electronics, ultimately leading to competitive alternatives to conventional silicon-based circuits.