You can try the first discovery and the 3D controls now. Stella unlocks every stage.
Entanglement: Correlated at a Distance
Watch two Bloch spheres dissolve into mist as they entangle, then tilt the measurement axes and see coincidence rates follow cos²(Δ/2).
Two qubits
Two of the previous chapter’s spheres float side by side. Both are equator superpositions — states that fall to one pole or the other, half and half, when measured. For now the two spheres are just strangers. Fire a few pair measurements and confirm there is no relationship between the left and right results. Matches and mismatches should scatter at roughly half and half.
Fire about 10 pair measurements and watch the match counter wander around 50%.
You can try the first discovery and the 3D controls now. Stella unlocks every stage.