2024/10/30 by Pavan Hosur, Hosur, Pavan · 1 citation
Computer Science · Engineering · #Computational Physics and Python Applications #FOS: Electrical engineering #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Parallel Computing and Optimization Techniques #Particle accelerators and beam dynamics #Signal Processing (eess.SP) #Superconductivity (cond-mat.supr-con) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2410.23352
openalex publication_date 2024/10/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Recent advancements in the realizations of superconducting diodes have pushed the diode coefficient η towards its theoretical maximum of η=1. In this work, we describe the construction of logic gates NOT, AND, OR, NAND and NOR using superconducting diodes with η≈1 by exploiting their dynamically tunable polarity. We then argue that fundamental theorems suppress η in intrinsic superconductors, rendering them likely unsuitable for the proposed devices, and point out that several previous proposals and platforms, remarkably, bypassed this suppression unwittingly. We discuss the realization of the digital logic in one such platform -- Josephson triodes that yielded η≈1 -- and argue that phases with spontaneous spatial or magnetic order can overcome some of its drawbacks. Thus, this work provides guiding principles for future platforms and develops the building blocks for superconductors-based digital electronics.