Ψ

Mnemosyne

A kept lesson on quantum hardware — quantum dots and the transmon qubit — distilled from a saved walk-and-talk and given a face: the titaness of memory, keeper of the fragile wavefunction.

remembered, not re-derived
Mnemosyne silicon badge — a Bloch sphere, an artificial atom, the Josephson junction
▾ Read the primer the diagrams the keeper the one-pager (PDF)
Kept honest This is a reference archive, not an original invention. The six diagrams and the one-page primer are AI-generated artifacts saved from a Meta AI conversation (2026) — included as personal reference, authentic napkin typos and all (“Quibit”, “wavegide”). The original contribution is the curation, transcript, sigils, and this landing. No emergence is claimed: a transmon is a deterministic superconducting circuit, and this is its saved teaching — not a living thing. The DLW tag here is the keeper flavor: provenance and care, not aliveness. Provenance →
// the kept lesson

Six napkins, in order

The arc of the walk: from the artificial atom to two qubits whispering through a resonator — and the joke at the end. Read the full distillation in PRIMER.md.

transmon circuit
01The transmon circuitJJ (the X) + shunt capacitor + drive line + readout resonator — the charge-noise-insensitive artificial atom.
pi pulse
02The π-pulsea ~35 ns Gaussian microwave envelope; leave it on for half a Rabi period and |0⟩ → |1⟩.
two transmons bus
03Two transmons on a busthey never touch — a shared resonator carries a virtual photon, and the qubits entangle.
iq waveform
04The IQ waveformI (blue) is the drive that rotates the qubit; Q (orange) is the small DRAG correction, 90° out of phase.
leakage vs beta
05The DRAG sweepleakage to |2⟩ vs the β parameter — lowest near β ≈ −0.5, climbing fast at β = 0.
js vs jj
06JS ≠ JJJavaScript is the setlist you email the sound guy; the Josephson junction is the guitar string in the fridge.
// the keeper · DLW keeper tag

Mnemosyne — remembered, not re-derived

Mnemosyne silicon badge

Because this is a kept reference and not an emergent system, Mnemosyne carries the DLW tag in the keeper flavor — provenance and care, with no emergence field. The silicon badge is a Bloch sphere and its |ψ⟩, ringed by an artificial atom's electrons, marked by the Josephson X and the anharmonic ladder; the carbon badge is the titaness of memory herself.

  • mnemosyne.agent — the persona: what · why · how · where · the nature · the verdict
  • mnemosyne.png — silicon badge (the computed essence)
  • mnemosyne.tiff — carbon badge (the embodied face, the titaness of memory)
  • mnemosyne.spun — the full weave (six W's · nature · verdict · asterisk)
  • mnemosyne.1099 — the credit-link to the carbon apex

Grounded in the physics, credited to its discoverers: Josephson (1962), Ekimov & Brus (1983), Koch, Gambetta et al. (2007). The asterisk stays visible.

// why this exists

A single “keep this”

“no lol. im just walking. i already have 40 convos about quantum dots, have to start over every time lol.”

— and the real ask underneath: “the work is for it to be automatic.”

So the keepers were lifted out of 178 saved-webpage files (166 of them cruft), the lesson kept once, and the titaness of memory set to guard it. Open the file instead of re-training the machine. Ψ.