AQFP Logic Lab

Not RSFQ batons — multiphase AC rocks parametron-like cells; bits are left/right settle (circulating-current polarity). Adiabatic = gentle rocking (energy intent), not free.

Excitation speed adiabatic (slow)

Active phase

—

Cell A / B / C

∅ ∅ ∅

E cartoon

low

See-saws settle L/R under multiphase AC (teaching cartoon)

Adiabatic: slow excite → lower switch energy intent. Slam (fast) → higher cartoon dissipation. Not zero energy.

a=1 b=1 c=0

Misaligned phase (need buffer)

MAJ(a,b,c)

Buffers

Schedule

Majority (≥2 of 3) · buffers = phase-alignment tax (cousin of DFF pads)

Phase scheduling is AQFP’s cousin of path balancing — insert buffers when inputs are not phase-ready.

Keep families separate. Shared cryogenics ≠ shared cell library. AQFP ≠ “ERSFQ with three clocks.”

Decoder ring — RSFQ batons vs AQFP multiphase see-saws

Energy claims need matched activity, temperature, AC frequency, and what was counted (logic vs AC plant).