# Characterization Experiments (qiskit_experiments.library.characterization)¶

## Experiments¶

 T1(qubit, delays[, backend]) T1 experiment class T2Ramsey(qubit, delays[, backend, osc_freq]) T2 Ramsey Experiment. T2Hahn(qubit, delays[, num_echoes, backend]) T2 Hahn Echo Experiment. Tphi(qubit, delays_t1, delays_t2[, ...]) Tphi Experiment Class QubitSpectroscopy(qubit, frequencies[, ...]) Class that runs spectroscopy by sweeping the qubit frequency. CrossResonanceHamiltonian(qubits, ...[, ...]) Cross resonance Hamiltonian tomography experiment. EchoedCrossResonanceHamiltonian(qubits, ...) Echoed cross resonance Hamiltonian tomography experiment. Rabi(qubit, schedule[, amplitudes, backend]) An experiment that scans a pulse amplitude to calibrate rotations between 0 and 1. EFRabi(qubit, schedule[, amplitudes, backend]) An experiment that scans the amplitude of a pulse inducing rotations between 1 and 2. HalfAngle(qubit[, backend]) An experiment class to measure the amount by which sx and x are not parallel. FineAmplitude(qubits, gate[, backend, ...]) Error amplifying fine amplitude calibration experiment. FineXAmplitude(qubit[, backend]) A fine amplitude experiment with all the options set for the $$\pi$$-rotation. FineSXAmplitude(qubit[, backend]) A fine amplitude experiment with all the options set for the $$\pi/2$$-rotation. FineZXAmplitude(qubits[, backend]) A fine amplitude experiment for the RZXGate(np.pi / 2). RamseyXY(qubit[, backend, delays, osc_freq]) Ramsey XY experiment to measure the frequency of a qubit. FineFrequency(qubit, delay_duration[, ...]) An experiment to make a fine measurement of the qubit frequency. RoughDrag(qubit, schedule[, betas, backend]) An experiment that scans the DRAG parameter to find the optimal value. ReadoutAngle(qubit[, backend]) Readout angle experiment class FineDrag(qubit, gate[, backend]) Fine DRAG experiment. FineXDrag(qubit[, backend]) Class to fine characterize the DRAG parameter of an X gate. FineSXDrag(qubit[, backend]) Class to fine characterize the DRAG parameter of an SX gate. LocalReadoutError(qubits) Class for local readout error characterization experiment # section: overview CorrelatedReadoutError(qubits) Class for correlated readout error characterization experiment # section: overview This class constructs the a CorrelatedReadoutMitigator containing the full assignment matrix $$A$$ characterizing the readout error for the given qubits from the experiment results accessible via the assignment_matrix() method. ResonatorSpectroscopy(qubit[, backend, ...]) Perform spectroscopy on the readout resonator.

## Analysis¶

 A class to analyze T1 experiments. T2 Ramsey result analysis class. A class to analyze T2Hahn experiments. TphiAnalysis([analyses]) Tphi result analysis class. A class to analyze cross resonance Hamiltonian tomography experiment. Drag calibration analysis based on a fit to a cosine function. Analysis class for the HalfAngle experiment to define the fixed parameters. An analysis class for fine DRAG calibrations to define the fixed parameters. An analysis class for fine amplitude calibrations to define the fixed parameters. The Ramsey XY analysis is based on a fit to a cosine function and a sine function. A class to analyze readout angle experiments Class to analysis resonator spectroscopy. Local readout error characterization analysis # section: overview Correlated readout error characterization analysis