Simulating Adiabatic Digital Logic on High Tc Superconductors

As computational power consumption rises, exploring alternatives to CMOS technology for improved energy efficiency is essential. One promising technology is the quantum flux parametron (QFP), a form of superconducting digital logic, recognized for its energy efficiency. QFPs function by maintaining a quantized magnetic flux in a loop with two Josephson junctions; however, a newer design has come about. Adiabatic quantum flux parametron (AQFP), an advanced form of QFPs, reduces energy consumption further by performing smoother, adiabatic bit flips using AC currents and precise tuning. This type of bit flip has the potential to be used in reversible computing. With high temperature superconductors it may be possible to run digital circuits using AQFPs at a Tc of 80 Kelvin. Our lab previously demonstrated QFPs using high-temperature superconductors capable of operating at 25 Kelvin. Building on this work, we simulated AQFP digital logic on high-temperature superconductors through computational methods. Our simulations confirm the viability of AQFP-based digital logic using high-temperature superconductors at a clock frequency of 10 GHz, establishing a foundation for future designs and optimizations.