Quantum Gate Quest

The Quantum Turtle · Quantum Play Lab

Quantum Gate Quest

Can you build the target qubit? Start at |0⟩, use the quantum gates, then check your answer. Matching the probabilities isn't always enough: phase can matter too.

GATE QUESTChallenge 1 of 6

Light up |1⟩

Try the X gate.

TARGET

|1⟩

YOUR QUBIT

|0⟩

Start with |0⟩. Choose a gate.

Circle area represents measurement probability; the clock hand represents the phase of each amplitude. Two states can measure the same way but differ in relative phase. States that differ only by a global phase count as a match. No account or leaderboard required. Explore the full My First Qubit simulator.