Evidence you can inspect.
Boundaries you can trust.

The public record separates real-hardware measurements, controlled simulation, and time projections.

Abstract gradient field

The sequential control cost did not grow across the tested range.

Two different controllers each passed 210 of 210 frozen trials from 16 to 65,536 controlled channels. For the retained controller, median acquisitions to contract moved from 11.5 to 12.

Real QPUs

Quantum Inspire Tuna-9: three of three trials entered contract at acquisition four.

Rigetti Cepheus: 48 controlled channels entered contract at acquisition four in one paired seed.

Commanded disturbances; no provider-private calibration registers; no hardware scaling exponent.

Controlled simulation

Primary result: 210 of 210 passes per confirmed controller across seven widths.

Extension: five of five runs at one million channels for each qualifying controller.

Tested over a finite range; not proof that every scale or device will behave the same.

Why this changes time to a usable solution.

At a fixed physical acquisition latency, a bounded number of sequential device visits stays fast. A width-dependent calibration sweep does not.

100 million controlled channels100 µs per physical acquisition
Qualifying retained controller2.0 ms20-acquisition no-growth projection
Scheduled sweep, 1,024 channels per frame9.77 s97,660 sequential acquisitions
Dense finite difference2.78 hminimum time to form the first complete update

Projection anchored to measured QSC-Bench acquisition counts. Acquisition-only: serial host work, interface bandwidth, actuation, and settling are excluded. The current NumPy implementation is not a 2 ms end-to-end system.

The architecture is the result. A specific device still has to pass the interface and timing checks.

Check compatibility

The public result, in five lines.

QSC-BENCH PRIMARY210 / 210

passes per confirmed member

Seven widths and thirty frozen confirmation seeds per width. Controlled simulation.

PRIMARY RANGE16 → 65,536

controlled channels

Median acquisitions for the retained controller moved from 11.5 to 12.

DEVELOPMENT EXTENSION1,000,000

controlled channels

Five of five runs passed for each qualifying controller. Not part of the frozen 30-seed inference.

REAL QPU3 / 3

Tuna-9 hardware trials

Contract entry at acquisition four in every trial.

REAL QPU48

controlled Cepheus channels

Contract entry at acquisition four in one paired seed across 96 physical qubits.

Reproduce it yourself.

Plants, baselines, seeds, thresholds, and results.

QSC-Bench

Latest frozen confirmation: 1,470 paired primary records across seven widths, two members at 210 of 210 each, hardware evidence indexing, and machine-checkable artifact hashes.

Reproducible Headline Results

Published reference implementation, pre-registered scale ladder to one hundred million channels, analog compute-stack campaign, per-seed records, and figure source data.

Rigetti Cepheus hardware

107-channel physical-hardware runs, job identifiers, billing metadata, registration, and finite-difference control.

IBM Heron hardware

Frozen twelve-acquisition comparisons through 32 channels and the 156-qubit hold result.

QUBO information boundary

Vector-feedback, ranking-only, measurement-priced greedy, and blind comparisons behind the information-bound result.

Combinatorial reproduction

Committed planted-instance experiments, baselines, budgets, and retained raw result records.

Grid Expansion Planning

Measurement-priced grid optimization from IEEE cases to a mega-scale ladder.

Fraud-model drift adaptation

Frozen-budget recovery under controlled model drift with pre-registered hypotheses.

WDM gain flatness

256 to 4,096 wavelength channels, six-to-seven-read lock, and a serial-coverage comparison.

Photonic mesh fidelity

An explicit complex mesh unitary, coupled phase drift, and 4,096 controlled phases.

Pulse-shaper control

Transform-quality hold across 128 to 4,096 spectral channels with a matched scalar-feedback arm.

QPU shot budget

A fixed fifteen-acquisition budget, binomial shot noise, and 107 to 4,096 controlled channels.

GHZ fidelity

Statevector-verified evaluation with pre-registered and amended records preserved.

THz beam tracking

1,024 to 4,096 elements, moving-beam hold, and per-element versus scalar instrumentation.