new_cpmg_sequence
- qctrlopencontrols.new_cpmg_sequence(duration, offset_count, pre_post_rotation=False, name=None)[source]
Creates the Carr-Purcell-Meiboom-Gill sequence.
- Parameters
duration (float) – Total duration of the sequence \(\tau\) (in seconds).
offset_count (int) – Number of offsets \(n\).
pre_post_rotation (bool, optional) – If
True, a \(X_{\pi/2}\) rotation is added at the start and end of the sequence. Defaults toFalse.name (string, optional) – Name of the sequence. Defaults to
None.
- Returns
The Carr-Purcell-Meiboom-Gill sequence.
- Return type
See also
Notes
The Carr-Purcell-Meiboom-Gill sequence 1 has the same timing and number of offsets as the Carr-Purcell sequence. However, the intermediate \(\pi\) rotations are applied along the \(Y\) axis. That is, it consists of \(Y_{\pi}\) operations applied at times
\[t_i = \frac{\tau}{n} \left(i - \frac{1}{2}\right) \;,\]where \(i = 1, \cdots, n\).
References