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qiskit.pulse.library.Gaussian

class Gaussian(duration, amp, sigma, name=None)

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A truncated pulse envelope shaped according to the Gaussian function whose mean is centered at the center of the pulse (duration / 2):

f(x)=ampexp((1/2)(xduration/2)2/sigma2)),0<=x<durationf(x) = amp * exp( -(1/2) * (x - duration/2)^2 / sigma^2) ) , 0 <= x < duration

Initialize the gaussian pulse.

Parameters

  • duration (int) – Pulse length in terms of the the sampling period dt.
  • amp (Union[complex, ParameterExpression]) – The amplitude of the Gaussian envelope.
  • sigma (Union[float, ParameterExpression]) – A measure of how wide or narrow the Gaussian peak is; described mathematically in the class docstring.
  • name (Optional[str]) – Display name for this pulse envelope.

__init__

__init__(duration, amp, sigma, name=None)

Initialize the gaussian pulse.

Parameters

  • duration (int) – Pulse length in terms of the the sampling period dt.
  • amp (Union[complex, ParameterExpression]) – The amplitude of the Gaussian envelope.
  • sigma (Union[float, ParameterExpression]) – A measure of how wide or narrow the Gaussian peak is; described mathematically in the class docstring.
  • name (Optional[str]) – Display name for this pulse envelope.

Methods

__init__(duration, amp, sigma[, name])Initialize the gaussian 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

ampThe Gaussian amplitude.
idUnique identifier for this pulse.
parametersReturn a dictionary containing the pulse’s parameters.
sigmaThe Gaussian standard deviation of the pulse width.

amp

The Gaussian amplitude.

Return type

Union[complex, ParameterExpression]

assign_parameters

assign_parameters(value_dict)

Return a new ParametricPulse with parameters assigned.

Parameters

value_dict (Dict[ParameterExpression, Union[ParameterExpression, float, int]]) – A mapping from Parameters to either numeric values or another Parameter expression.

Return type

ParametricPulse

Returns

New pulse with updated parameters.

draw

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

Plot the pulse.

Parameters

  • 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)

Returns

A matplotlib figure object of the pulse envelope

Return type

matplotlib.figure

get_sample_pulse

get_sample_pulse()

Deprecated.

Return type

Waveform

get_waveform

get_waveform()

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

Return type

Waveform

id

Unique identifier for this pulse.

Return type

int

parameters

Return a dictionary containing the pulse’s parameters.

Return type

Dict[str, Any]

sigma

The Gaussian standard deviation of the pulse width.

Return type

Union[float, ParameterExpression]

validate_parameters

validate_parameters()

Validate parameters.

Raises

PulseError – If the parameters passed are not valid.

Return type

None

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