Quantum Powerhouse

Learn

Learn quantum computing by playing it

Four levels, 23 steps, zero slides. Each step links to a live simulation in the arcade; the text tells you what to notice. When you can predict the next game before pressing the button, you've learned the thing.

Level 1

One qubit

Leave knowing what a state is, what a gate does, and why measurement is a question, not a reading.

  1. 1.
    Gate Mixer, A qubit is an arrow; gates rotate it. Press H twice and watch it come back.
  2. 2.
    π-Pulse Trainer, How a NOT gate is made: by calibrating a rotation.
  3. 3.
    Born Casino, Probability is fundamental here. You cannot beat it, and that is the lesson.
  4. 4.
    Measurement Duel, The same state answers Z and X differently. That is complementarity.
  5. 5.
    State Match, Fidelity: how close two states are, as a steering skill.

Level 2

Interference: the engine

See why phase, not probability, is the quantum resource.

  1. 1.
    Interference Lab, Two paths, one phase knob, certainty to impossibility. Every algorithm uses this.
  2. 2.
    Phase Kickback, The control qubit takes the hit. Deutsch and Grover run on this trick.
  3. 3.
    Bloch Detective, Read gates off a Bloch sphere by eye.

Level 3

Entanglement: no classical story

Experience the thing Einstein called spooky, and measure it.

  1. 1.
    Entanglement Dial, Turn two qubits into one inseparable pair; watch qubit A's purity drop to ½.
  2. 2.
    Entangled Dice, Random each, identical together.
  3. 3.
    CHSH. Beat the Classical Bound, Violate a Bell inequality with your own sampled rounds.
  4. 4.
    Teleportation Walkthrough, Move a state without moving matter, and why it can't beat light.
  5. 5.
    Superdense Coding, Two bits on one qubit, with a pre shared pair.
  6. 6.
    The Cloning Button, Why copying is forbidden, the theorem that secures QKD.
  7. 7.
    The GHZ Game, Beat a provable 75% classical ceiling every single round.

Level 4

Algorithms, noise and error correction

Run the famous algorithms, then see what noise does to them and how error correction answers.

  1. 1.
    Deutsch's One Question Oracle, The first quantum speedup, never wrong in one query.
  2. 2.
    Grover Searchlight, Amplitude amplification, and what happens when you over search.
  3. 3.
    Decoherence Dial, Coherence bleeding into the environment, on a real density matrix.
  4. 4.
    Repetition Rescue, Error correction pays for itself, the road to logical qubits.
  5. 5.
    BB84. Catch Eve, Physics as security: the eavesdropper leaves fingerprints.
  6. 6.
    Born Rule Randomness, What a quantum random number generator actually is.
  7. 7.
    Bernstein-Vazirani, A whole secret in one oracle query, certainty from interference.
  8. 8.
    QFT Period Finder, The Fourier peaks Shor reads factors from.

Graduated? Open the Circuit Lab and build something the games never showed you. Then read what it's actually good for, so the hype never gets you.