π Learning path
Learn quantum computing, step by step
Each concept has three levels. Start at Simple, move up when you're ready, then open the linked experiment to see it in action. You can set your default level in π¨ settings.
Qubit
The quantum upgrade of a bit.π§ͺ See it in the lab βA quantum bit. It can be in a mix of 0 and 1 until you measure it.Superposition
Being a combination of 0 and 1.π§ͺ See it in the lab βBeing in a combination of 0 and 1 at the same time β in a way that can interfere.Measurement
How quantum becomes classical.π§ͺ See it in the lab βLooking at a qubit. You always get a normal 0 or 1.Entanglement
Qubits whose results are linked.π§ͺ See it in the lab βWhen qubits become linked so their results match up, even far apart.Quantum Gate
Operations that change qubits.π§ͺ See it in the lab βAn operation that changes qubits, like a logic gate changes bits.Oracle
The checker that marks answers.π§ͺ See it in the lab βA 'checker' that secretly marks the right answer.Interference
Amplitudes adding and cancelling.π§ͺ See it in the lab βWhen quantum possibilities add up or cancel out, like waves in water.Grover
Quantum search using ~βN queries.π§ͺ See it in the lab βA quantum method for finding a marked item among many, using fewer checks.Noise
Why real quantum computers are hard.π§ͺ See it in the lab βUnwanted disturbances that cause qubits to make mistakes.QEC
Protecting fragile information.π§ͺ See it in the lab βQuantum error correction: tricks to spot and fix qubit mistakes.QML
Circuits that learn.π§ͺ See it in the lab βQuantum machine learning: using quantum circuits as learning models.