# new_periodic_sequence¶

qctrlopencontrols.new_periodic_sequence(duration, offset_count, pre_post_rotation=False, name=None)[source]

Creates the periodic 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 to False.

• name (string, optional) – Name of the sequence. Defaults to None.

Returns

The periodic sequence.

Return type

DynamicDecouplingSequence

Notes

The periodic sequence 1 is parameterized by duration $$\tau$$ and number of offsets $$n$$. The sequence consists of $$X_{\pi}$$ operations at offsets given by

$t_i = \frac{\tau}{n + 1} \;,$

where $$i = 1, \cdots, n$$.

References

1

L. Viola and E. Knill, Physical Review Letters 90, 037901 (2003).