This full adder is constructed using two Feynman gates and a multiplexer. Fig. 8: Internal RTL of a reversible full adder. A Feynman Gate is a 2*2 reversible logic circuit. This gate placed in the ...

Programmable reversible logic is emerging as a prospective logic design style for implementation in modern nanotechnology and quantum computing with minimal impact on circuit heat generation.

Reversible Logic: A computing paradigm where operations are invertible, ensuring that no information is lost during processing, which is essential for both energy efficiency and quantum computation.

Reversible gates, like Fredkin gates, may be useful for energy conservation efforts. Cohen et al. present a formalism that may be used to produce any reversible logic.