Entanglement

States that can’t be split

An interactive lesson with 6 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Entangled qubits have correlated outcomes and can’t be described separately.
• Entanglement doesn’t allow faster-than-light communication.
• $n$ qubits need $2^n$ amplitudes, which quickly overwhelms classical computers.

Steps

1. Two qubits
2. Spooky?
3. Tilted detectors
4. Breaking Bell’s limit
5. Sixty degrees apart
6. Simulating 50 qubits