Reversible Fluxon Logic With Optimized CNOT Gate Components

Reversible logic gates were previously implemented in superconducting circuits as adiabatic-reversible gates, which are powered with a sufficiently slow clock. In contrast, we studying ballistic-reversible where fluxons serve to both encode the information and power gates. No is applied gate apart from energy of input fluxons, two possible flux polarities represent bit states. Undamped long Josephson junctions (LJJs), move at practically constant speed inertia, form output channels LJJs connected by circuit interfaces, designed allow ballistic scattering fluxon states, using temporary excitation localized mode. The duration resonant determines operation time gate, approximately few plasma periods. Due coherent conversions between modes can be very efficient: our simulations only percent fluxon's dissipated operation. Ballistic-reversible combined other, non-ballistic extend range functionalities. Here describe how CNOT built structure that includes IDSN (Identity-else-Same-gives-NOT) Store-and-Launch (SNL) 2-bit analyze terms equivalent 1-bit circuits. SNL clocking allows storage clocked launch on bit-state dependent path. provide necessary routing synchronization for gate.