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Superpositioned
Reach the target state with the gates on the keys. The bars are the chances of reading 0 and 1. A red bar marks the amplitude whose sign is opposite to the other one, and only that relative sign is physical.
LOAD "NOTES" Learn Six short notes, from one classical bit to two qubits read together. Each note does the sums the next one needs. LIST Nerdictionary Thirty-nine words, defined the way the notes use them. The second paragraph crosses out the version that sounds better than the sum. PLOT Qubit One qubit drawn as an arrow on the Bloch sphere. Press a gate and watch the arrow turn about that gate's axis. DIR Archive The notes, the dictionary, the puzzles, the qubit page and the arcade, filed in one room with the longer courses beside them.