qiskit.algorithms.IterativePhaseEstimation.construct_circuit¶
- IterativePhaseEstimation.construct_circuit(unitary, state_preparation, k, omega=0.0, measurement=False)[source]¶
Construct the kth iteration Quantum Phase Estimation circuit.
For details of parameters, see Fig. 2 in https://arxiv.org/pdf/quant-ph/0610214.pdf.
- Parameters
unitary (QuantumCircuit) -- The circuit representing the unitary operator whose eigenvalue (via phase) will be measured.
state_preparation (QuantumCircuit) -- The circuit that prepares the state whose eigenphase will be measured. If this parameter is omitted, no preparation circuit will be run and input state will be the all-zero state in the computational basis.
k (int) -- the iteration idx.
omega (float) -- the feedback angle.
measurement (bool) -- Boolean flag to indicate if measurement should be included in the circuit.
- Returns
the quantum circuit per iteration
- Return type