qiskit.pulse.Constant¶

class Constant(duration, amp, name=None)[Quellcode]¶

A simple constant pulse, with an amplitude value and a duration:

\[f(x) = amp , 0 <= x < duration f(x) = 0 , elsewhere\]

Initialize the constant-valued pulse.

Parameter

duration (int) – Pulse length in terms of the the sampling period dt.
amp (Union[complex, ParameterExpression]) – The amplitude of the constant square pulse.
name (Optional[str]) – Display name for this pulse envelope.

__init__(duration, amp, name=None)[Quellcode]¶

Initialize the constant-valued pulse.

Parameter

duration (int) – Pulse length in terms of the the sampling period dt.
amp (Union[complex, ParameterExpression]) – The amplitude of the constant square pulse.
name (Optional[str]) – Display name for this pulse envelope.

Methods

`__init__`(duration, amp[, name])	Initialize the constant-valued pulse.
`assign_parameters`(value_dict)	Return a new ParametricPulse with parameters assigned.
`draw`([dt, style, filename, interp_method, …])	Plot the pulse.
`get_sample_pulse`()	Deprecated.
`get_waveform`()	Return a Waveform with samples filled according to the formula that the pulse represents and the parameter values it contains.
`validate_parameters`()	Validate parameters.

Attributes

`amp`	The constant value amplitude.
`id`	Unique identifier for this pulse.
`parameters`	Return a dictionary containing the pulse’s parameters.

property amp¶

The constant value amplitude.

assign_parameters(value_dict)¶

Return a new ParametricPulse with parameters assigned.

Parameter: value_dict (Dict[ParameterExpression, Union[ParameterExpression, float, int]]) – A mapping from Parameters to either numeric values or another Parameter expression.
Rückgabetyp: ParametricPulse
Rückgabe: New pulse with updated parameters.

draw(dt=1, style=None, filename=None, interp_method=None, scale=1, interactive=False)¶

Plot the pulse.

Parameter

dt (float) – Time interval of samples.
style (Optional[PulseStyle]) – A style sheet to configure plot appearance
filename (Optional[str]) – Name required to save pulse image
interp_method (Optional[Callable]) – A function for interpolation
scale (float) – Relative visual scaling of waveform amplitudes
interactive (bool) – When set true show the circuit in a new window (this depends on the matplotlib backend being used supporting this)

Rückgabe

A matplotlib figure object of the pulse envelope

Rückgabetyp

matplotlib.figure

get_sample_pulse()¶

Deprecated.

get_waveform()[Quellcode]¶

Return a Waveform with samples filled according to the formula that the pulse represents and the parameter values it contains.

property id¶

Unique identifier for this pulse.

property parameters¶

Return a dictionary containing the pulse’s parameters.

validate_parameters()[Quellcode]¶

Validate parameters.