FastDragI

class iqm.pulse.playlist.fast_drag.FastDragI(n_samples, full_width, coefficients, suppressed_frequencies, compute_coefs_from_frequencies, number_of_cos_terms, suppressed_interval_widths, weights, center_offset=0)

Bases: FastDrag

I-component of the Fourier Ansatz Spectrum Tuning (FAST) drag pulse.

The I-envelope is defined as

\[I(t) = \sum_{n=1}^{N} c_n [1 - \cos(2\pi n t/t_p + n\pi)],\]

where \(N\) is the number of cosine terms in the series, \(\{c_n\}\) are the coefficients, and the pulse is defined on the interval \(t \in [-t_p/2, t_p/2]\).

Module: iqm.pulse.playlist.fast_drag

Attributes

number_of_cos_terms
suppressed_interval_widths
weights
full_width
coefficients
suppressed_frequencies
compute_coefs_from_frequencies
n_samples	Requested number of samples for the waveform.

Methods

Parameters:

• n_samples (int)

• full_width (float)

• coefficients (ndarray)

• suppressed_frequencies (ndarray)

• compute_coefs_from_frequencies (bool)

• number_of_cos_terms (int)

• suppressed_interval_widths (ndarray)

• weights (ndarray)

• center_offset (float)

_sample(sample_coords)

Actually samples the waveform.

Parameters:

sample_coords (ndarray) – coordinates of the samples to be returned

Returns:

array of samples (same shape as sample_coords, dtype == float)

Return type:

ndarray