Circuit Playground
Pick a gate, click a wire to place it. For CNOT, click the control qubit first, then the target on the same column.
Qubits
Gate
Examples
2 qubits and 0 gates; 1 outcomes have visible probability.
Learning mode
Mission briefingIntermediate / 9 min
Build quantum behavior
A circuit is a score for quantum amplitudes: each gate edits the pattern before measurement.
Load a Bell-state example, then remove one gate and compare the histogram.
Definitions on demand
Amplitude
A complex coefficient whose squared magnitude gives a measurement probability.
Interference
Amplitude contributions combine constructively or destructively before measurement.
Entanglement
A joint state that cannot be described as independent states for each qubit.
Circuit
8 / 8
Probability Distribution
1.0000|00⟩
0.0000|01⟩
0.0000|10⟩
0.0000|11⟩
Statevector
| State | Amplitude | Probability |
|---|---|---|
| |00⟩ | 1.0000 + 0.0000i | 1.0000 |
| |01⟩ | 0.0000 + 0.0000i | 0.0000 |
| |10⟩ | 0.0000 + 0.0000i | 0.0000 |
| |11⟩ | 0.0000 + 0.0000i | 0.0000 |