42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
---
|
||
title: Constant (v1.2)
|
||
description: API reference for qiskit.pulse.library.Constant in qiskit v1.2
|
||
in_page_toc_min_heading_level: 1
|
||
python_api_type: class
|
||
python_api_name: qiskit.pulse.library.Constant
|
||
---
|
||
|
||
# Constant
|
||
|
||
<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">
|
||
Bases: [`object`](https://docs.python.org/3/library/functions.html#object "(in Python v3.13)")
|
||
|
||
A simple constant pulse, with an amplitude value and a duration:
|
||
|
||
$$
|
||
f(x) = \text{amp}\times\exp\left(i\text{angle}\right) , 0 <= x < duration
|
||
f(x) = 0 , elsewhere
|
||
$$
|
||
|
||
Create new pulse instance.
|
||
|
||
**Parameters**
|
||
|
||
* **duration** – Pulse length in terms of the sampling period dt.
|
||
* **amp** – The magnitude of the amplitude of the square envelope.
|
||
* **angle** – The angle of the complex amplitude of the square envelope. Default value 0.
|
||
* **name** – Display name for this pulse envelope.
|
||
* **limit\_amplitude** – If `True`, then limit the amplitude of the waveform to 1. The default is `True` and the amplitude is constrained to 1.
|
||
|
||
**Returns**
|
||
|
||
ScalableSymbolicPulse instance.
|
||
|
||
## Attributes
|
||
|
||
### alias
|
||
|
||
<Attribute id="qiskit.pulse.library.Constant.alias" attributeValue="'Constant'" />
|
||
</Class>
|
||
|