Two of QuantumLab’s nine screens, rebuilt small enough to run here: Born-rule measurement with an interference sweep, and a wave packet meeting a barrier.
MEASUREMENT BASIS
{{ qState }}SEED {{ qSeed }}
{{ o.label }}{{ o.obs }} · theory {{ o.th }}
{{ o.sub }}
{{ r.k }}{{ r.v }}
INTERFERENCE · P(FIRST OUTCOME) AS φ SWEEPS A FULL TURN— SUPERPOSITION- - CLASSICAL MIXTURE● YOUR φ{{ qFringeNote }}
RUNNING FREQUENCY OF THE FIRST OUTCOME · LOG TRIAL AXIS
BARRIER HEIGHT V₀
{{ r.k }}{{ r.v }}
The time-dependent Schrödinger equation (ħ = m = 1) stepped with Crank–Nicolson, which keeps the norm at 1 to rounding. As the packet clears the barrier, the transmitted share settles near the stationary T(E) averaged over the packet’s energies. One particle in one dimension; nothing is measured.
A BROWSER RE-IMPLEMENTATION FOR ILLUSTRATION, not the Java app. It uses the same published SplitMix64 generator and inverse-CDF rule as ADR-0003, and the same Crank–Nicolson scheme. Figures in the header strip and results table come from the repository.