qiskit-documentation/docs/api/qiskit/0.29/qiskit.pulse.builder.qubit_...

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---
title: qubit_channels (v0.29)
description: API reference for qiskit.pulse.builder.qubit_channels in qiskit v0.29
in_page_toc_min_heading_level: 1
python_api_type: function
python_api_name: qiskit.pulse.builder.qubit_channels
---
<span id="qiskit-pulse-builder-qubit-channels" />
# qiskit.pulse.builder.qubit\_channels
<Function id="qiskit.pulse.builder.qubit_channels" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.18/qiskit/pulse/builder.py" signature="qubit_channels(qubit)">
Returns the set of channels associated with a qubit.
Examples:
```python
from qiskit import pulse
from qiskit.test.mock import FakeOpenPulse2Q
backend = FakeOpenPulse2Q()
with pulse.build(backend):
print(pulse.qubit_channels(0))
```
```
{DriveChannel(0), MeasureChannel(0), AcquireChannel(0), ControlChannel(0), ControlChannel(1)}
```
<Admonition title="Note" type="note">
Requires the active builder context to have a backend set.
</Admonition>
<Admonition title="Note" type="note">
A channel may still be associated with another qubit in this list such as in the case where significant crosstalk exists.
</Admonition>
**Return type**
`Set`\[`Channel`]
</Function>