Quantum Circuit Builder
Drag gates onto the circuit, simulate, and visualize quantum states in real-time.
Gate Palette — drag onto circuit
H
Hadamard
Creates superposition. Maps |0⟩ to (|0⟩+|1⟩)/√2
X
Pauli-X
Bit flip gate. Swaps |0⟩ and |1⟩
Y
Pauli-Y
Rotation around Y-axis. Maps |0⟩ to i|1⟩
Z
Pauli-Z
Phase flip gate. Maps |1⟩ to -|1⟩
CNOT
CNOT
Controlled-NOT. Flips target qubit if control is |1⟩
2-qubit gate
Circuit
2q
q0
q1
Drag gates from the palette and drop them onto the circuit. Click a placed gate to remove it.
Probabilities
Add gates and simulate to see probabilities
Bloch Sphere
X
0.000
Y
0.000
Z
1.000
θ = 0.0°
φ = 0.0°