32 lines
1.2 KiB
Plaintext
32 lines
1.2 KiB
Plaintext
---
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title: Constant (v1.4)
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description: API reference for qiskit.pulse.library.Constant in qiskit v1.4
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in_page_toc_min_heading_level: 1
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python_api_type: class
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python_api_name: qiskit.pulse.library.Constant
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---
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# Constant
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<Class id="qiskit.pulse.library.Constant" isDedicatedPage={true} signature="qiskit.pulse.library.Constant(duration, amp, angle=0.0, name=None, limit_amplitude=None)" modifiers="class">
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Bases: [`object`](https://docs.python.org/3/library/functions.html#object "(in Python v3.13)")
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A simple constant pulse, with an amplitude value and a duration:
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$$
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f(x) = \text{amp}\times\exp\left(i\text{angle}\right) , 0 <= x < duration
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f(x) = 0 , elsewhere
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$$
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<Admonition title="Deprecated since version 1.3" type="danger">
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The class `qiskit.pulse.library.symbolic_pulses.Constant` is deprecated as of Qiskit 1.3. It will be removed in Qiskit 2.0. The entire Qiskit Pulse package is being deprecated and will be moved to the Qiskit Dynamics repository: [https://github.com/qiskit-community/qiskit-dynamics](https://github.com/qiskit-community/qiskit-dynamics)
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</Admonition>
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## Attributes
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### alias
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<Attribute id="qiskit.pulse.library.Constant.alias" attributeValue="'Constant'" />
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</Class>
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