◄ UD0   PSĒPHOS · the processor workshop · concept
// PSĒPHOS · electromagnetic processor · 128-bit concept

The Electromagnetic Core

a magnonic / spin-wave processor concept · computes with magnetic waves, not moving charge · ROOT0 / David Lee Wise
Every processor in PSĒPHOS so far moves something through the chip — photons, ions, charge. The Electromagnetic Core moves nothing. Its signal is a spin wave — a ripple of electron-spin precession (a magnon) travelling through a magnetic film — and its logic is done by interference: where two spin waves meet in phase they add (a 1), where they meet out of phase they cancel (a 0). No current flows, so there is no resistive heat to carry away. The universal gate is a magnonic majority gate, read out by magnetic tunnel junctions. Below it is running — a live mock prototype — followed by the technical blueprint and the spec sheet.
✓ THE PHYSICS IS REAL

Magnetic computing exists. Magnonics (spin-wave logic), spintronics, MRAM / magnetic tunnel junctions, and nanomagnetic logic are active, published research. Spin-wave majority gates have been demonstrated in the lab. The carrier and the gate are real.

◐ THE DESIGN IS A CONCEPT

ROOT0's own architecture. The specific 128-bit flux-lattice layout, the layer stack, and the "core" framing are a speculative design — a coherent concept built on real primitives, not a validated chip layout or a benchmarked simulation.

◔ NOT A FABRICATED CHIP

A blueprint, not silicon. Nothing here was etched or measured. The live core is a faithful model of magnonic interference logic; the blueprint is a technical render. Read it as a disclosure of a design, not a product.

// live · the core, running

The magnonic majority gate, in motion

Three spin-wave sources — inputs A, B, C — feed one combiner. Each input is a wave whose phase encodes its bit: in-phase = 1, anti-phase (π) = 0. They superpose; the output wave takes the phase of the majority, and a magnetic tunnel junction reads its sign as the output bit. Toggle the inputs and watch the interference do the arithmetic. Pin one input to wire the same gate into a plain AND or OR — which is why majority is universal.

inputs: gate:
combined amplitude readout (MTJ) → ·
No charge is transported across the gate — only a phase of precession propagates, so the energy cost is set by spin damping, not by I²R resistive loss. ⚑ That is the whole promise of magnonic logic: compute by interference, not by current. A majority gate is functionally complete — pin an input low and you have AND, pin it high and you have OR — so this one cell, tiled, is a universal fabric. It is the same Boolean algebra of Boole and the same gate-universality of De Morgan, carried on magnetic waves instead of voltages.
// blueprint · the stack & the bus

The technical blueprint

Two views of the Electromagnetic Core: a cross-section of the layer stack (how a bit is launched, carried, and read), and a block diagram of the 128-bit datapath (how the magnonic majority cells tile into a processor). Dimensions are concept targets, not measured values.

FIG. 1 — layer-stack cross-section · launch (microstrip antenna) → propagate (YIG magnonic waveguide) → compute (interference combiner) → read (MTJ sense head) · flux returned through a soft-magnetic yoke
FIG. 2 — datapath block diagram · 128 input transducers → spin-wave bus → majority-gate ALU fabric (carry-save) → MTJ sense array → 128-bit register · clocked by an RF bias field
// architecture · how it computes

How it folds together

Four layers, one idea — keep the information in the magnetic order and never move a charge across the chip.

1 · LaunchA pulsed microstrip antenna (a tiny coil/transducer) excites a coherent spin wave in the magnetic film. The bit is written into the wave's phase — 0 or π — by the timing of the pulse. No charge enters the channel.
2 · PropagateThe wave travels through a YIG (yttrium-iron-garnet) waveguide — the lowest-damping magnetic material known, so a magnon can travel macroscopic distances. Multiple waveguides carry the operands of one operation toward a junction.
3 · ComputeAt the junction the waves interfere. The combined wave's phase is the majority of the inputs' phases — a complete logic gate with no transistors, no current, no switching charge. Bias fields steer and clock the fabric.
4 · ReadA magnetic tunnel junction (the MRAM read element) senses the resultant wave's phase/amplitude as a resistance, converting it back to a voltage bit — the only place charge appears, at the very edge.
Because the state lives in spin and flux, it is also non-volatile — the magnetic order persists with the power off, so the Core wakes up holding its last state (the MRAM property). ⚑ Sits in PSĒPHOS beside the Photonic, Plasmonic, and Memristive cores — each a different physical answer to the same question: what else can carry a bit? Here the answer is a magnetic wave.
// spec sheet · concept targets

Specification

classElectromagnetic (magnonic) processor — concept
signal carrierspin waves (magnons) · phase-encoded bits
substrateYIG / permalloy magnonic waveguide on a soft-magnetic yoke
logic primitivemagnonic majority gate (functionally complete) via wave interference
word width128-bit (entry tier of the PSĒPHOS 128 → 512 → 4096 build-out)
clockRF–microwave bias field · GHz today, THz the ceiling of spin dynamics
read-outmagnetic tunnel junction (MTJ) sense array — the MRAM element
energy modelset by spin damping, not I²R — no charge transport across gates
statenon-volatile — magnetic order holds with power off
builds on (real)magnonics · spintronics · MRAM/MTJ · nanomagnetic logic · spin-wave majority gates
statusconcept / disclosure — not fabricated, not benchmarked