Parameterized Circuit Lab
1-qubit ansatz on the Bloch sphere
Choose an ansatz structure (Ry-Rz, Rx-Ry-Rz, Euler decomposition) and adjust rotation angles with sliders. The Bloch sphere shows the resulting quantum state in real time. Observe how each gate rotates the state vector, and read off Pauli expectation values and measurement probabilities.
|0⟩---Ry(0.00)---Rz(0.00)---➔
-pi0pi
-pi0pi
Pauli Expectation Values
<X>0.0000
<Y>0.0000
<Z>1.0000
State Vector
|psi⟩ = (1.000+0.000i) |0⟩ + (0.000+0.000i) |1⟩
P(|0⟩) = 1.0000 P(|1⟩) = 0.0000
Bloch Coordinates
r = (0.000, 0.000, 1.000)
|r| = 1.0000
Drag the sliders to rotate the qubit state. The purple trail shows the path traced by sweeping the first parameter from -pi to pi.