There is a branch of computing called zero energy computing. It overlaps with time reversible computing. With power demands for exabyte data centers and exaflo

There is a branch of computing called zero energy computing. It overlaps with time reversible computing. With power demands for exabyte data centers and exaflop computers well into megawatts, there is interest in low energy computing. One scheme Ive heard pairs a forward circuirt with an inverse circuit to reduce energy, despite it appears to double the computation.