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Quantum Entanglement: Bell Test & Correlation Simulator

Manipulate a pair of entangled qubits in a controlled environment: set measurement angles on two Bloch spheres, measure single trials or full batches, watch the quantum correlation -cos(theta) emerge, and run a live CHSH Bell test against the classical local-hidden-variable bound.

Geology & Earth Science2DModerate60 FPS📱 Mobile-adapted🌍 Earth

This is a controlled environment for manipulating a genuinely entangled qubit pair. Two qubits are prepared in the singlet Bell state and rendered as a pair of 3D Bloch spheres; dragging either measurement-axis slider and pressing Measure samples a real quantum outcome from the Born rule and instantly collapses both spheres in a correlated way, exactly as EPR-Bohm theory predicts. Run a single shot, batch 200 trials to watch the measured correlation converge on the theoretical curve E(θ) = −cos(Δθ), switch to the classical local-hidden-variable model to see the same experiment take on a straight-line correlation instead of a cosine, and fire off a live CHSH Bell test to watch the entangled pair's statistics exceed the |S| ≤ 2 bound that any classical, locally-real pair could never cross.

⚙ Under the hood

This simulation allows you to explore the bizarre phenomenon of quantum entanglement – where two particles become linked and share the same fate, no matter how far apart they are. Manipulate entangled qubits and observe their correlated behavior in a controlled environment.

Quantum EntanglementCorrelation

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install