A Quad-Phase Majority-Based 8-bit Kogge-Stone Adder Using Adiabatic Quantum-Flux-Parametron Majority Logic

摘要

Superconductor-based AQFP (adiabatic quantum-fluxparametron)logic holds tremendous promise towards buildingextremely energy efficient computing systems with bit energiesapproaching 100kBT [1]. Adder designs serve as a goodbenchmark for evaluating new logic technologies and in previousstudies, we use AQFP logic to design majority-logic-optimizedadders using various majority logic reduction properties [2].These designs were operated using tri-phase excitation. In thisstudy, we implement a majority-based Kogge-Stone adder designusing quad-phase excitation as a preliminary step towardsdemonstrating a complex high-speed AQFP circuit.