API Reference: qiskit.circuit.QuantumCircuit.measure
The QuantumCircuit.measure method maps quantum information from qubits into classical bits. The primary parameters are qubit and cbit. Each qubit argument must have a corresponding classical bit destination.
Measurement is non-unitary and generally collapses the measured qubit into a computational-basis outcome. Because it writes into classical memory, the circuit must contain enough classical bits before the method is called.
Parameters
| Parameter Name | Type | Description |
|---|---|---|
qubit |
int | Qubit | list |
The quantum bit or register section to be measured. |
cbit |
int | Clbit | list |
The classical bit or register section that stores the result. |
from qiskit import QuantumCircuit
qc = QuantumCircuit(1, 1)
qc.h(0)
qc.measure(0, 0)Example Output
{
"status": "success",
"operation": "Measure",
"qubit": 0,
"classical_bit": 0
}Used In Technical Article
Implementing Quantum Phase Estimation for Eigenvalue Evaluation