39 lines
1.5 KiB
Plaintext
39 lines
1.5 KiB
Plaintext
---
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title: ampcal_cx_circuits
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description: API reference for qiskit.ignis.characterization.ampcal_cx_circuits
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in_page_toc_min_heading_level: 1
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python_api_type: function
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python_api_name: qiskit.ignis.characterization.ampcal_cx_circuits
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---
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<span id="qiskit-ignis-characterization-ampcal-cx-circuits" />
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# qiskit.ignis.characterization.ampcal\_cx\_circuits
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<Function id="qiskit.ignis.characterization.ampcal_cx_circuits" isDedicatedPage={true} github="https://github.com/qiskit-community/qiskit-ignis/tree/stable/0.5/qiskit/ignis/characterization/gates/circuits.py" signature="ampcal_cx_circuits(max_reps, qubits, control_qubits)">
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Generates circuit for measuring the amplitude error of the cx gate
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The cx gate is repeatedly applied and we look at the population of the target qubit in the xy axis (amplitude erorr amplification sequence)
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X(control)-X90(target)-(CX)^n
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Note: the circuit may not behave as intended if the target-control pairs are not in the coupling map
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**Parameters**
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* **max\_reps** (*int*) – the maximum number of repetitions. Circuits will increment by 1 rep up to max\_rep
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* **qubits** (*list*) – a list of integer indices of the qubits to perform the calibration on
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* **control\_qubits** (*list*) – a list of integer indices of the control qubits to perform the calibration on
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**Returns**
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**A tuple of the form (`circuits`, `xdata`) where**
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`circuits` is a list of QuantumCircuit and `xdata` is a list of gate repetitions (number of u2 gates)
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**Return type**
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tuple
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</Function>
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