Four things I built that aren't Datum.
Selected rather than complete. Each one exists because a specific question needed answering, and each shipped to a working result rather than a report.
Coherent Ising machine simulator
A staged simulation of optical Ising machines, from a NumPy spin substrate through to hardware-fidelity modelling with realistic loss and noise. The groundwork behind the photonic inference patent.
Reduced-order neutron transport
Finite-element solution of the Boltzmann transport equation with Sn angular discretisation, compressed to a proper orthogonal decomposition basis and then to a learned surrogate. Minutes to milliseconds.
Gaze-primed ring interface
Two instrumented rings on one finger, sharing a clock so that common-mode rejection recovers relative articulation from two noisy IMUs. Designed to a hard go/no-go gate on measured CMRR before any hardware was ordered.
Quantitative trading systems
An Ornstein–Uhlenbeck mean-reversion engine for pairs selection, a volatility surface builder, and an agent-based model of bubble formation. Built as architected systems, not notebooks.