Visualizations
12 experiments you can actually run
These are live simulations, not videos or canned animations. Every slider you drag genuinely re-solves the physics in your browser — the amplitudes, the interference pattern, and the measurement statistics are all computed from the state you built, on the spot.
The Double-Slit Experiment
Fire electrons one at a time and watch stripes appear that no particle should make.
BeginnerSuperposition & Measurement
Build a quantum state gate by gate, then find out what measuring it actually destroys.
BeginnerThe Bloch Sphere
Every possible state of a single qubit, as one point on a globe you can spin.
BeginnerEntanglement
Two qubits whose answers always match — without either one carrying the answer.
IntermediateQuantum Tunneling
A particle without the energy to climb the wall, appearing on the other side anyway.
IntermediateGrover's Search
Find one item in a million with a thousand guesses — by making the wrong answers cancel.
IntermediateQuantum Fourier Transform
The transform at the heart of Shor’s algorithm, with every phase laid bare.
AdvancedDecoherence
Watch a qubit forget — the arrow retracts into the sphere and takes the phase with it.
IntermediateVQE and the Barren Plateau
A classical optimiser hunts a ground-state energy across a landscape that goes flat as the qubit count grows.
AdvancedShor's Algorithm: Period Finding
The one quantum step inside factoring — finding a hidden period, not the factors themselves.
AdvancedThe Surface Code
Why one error-corrected qubit costs a hundred real ones, and what happens when you skimp on distance.
AdvancedDecoder Duel: Lookup vs Learned
A neural decoder trains in your browser and chases majority vote — which, on this code, is provably unbeatable.
Advanced