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Add support for time dependent expressions in transformations. #704
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Enables time dependent expressions for arithmetic pulse templates.
…nel transformation to reflect that it allows time dependent channels
5 tasks
shumpohl
commented
Dec 5, 2022
@@ -362,6 +371,23 @@ def test_get_transformation(self): | |||
expected_trafo = ScalingTransformation(inv_scalar) | |||
self.assertEqual(expected_trafo, trafo) | |||
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def test_time_dependent_expression(self): |
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Modulated gauss example
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The original idea was to enable time dependent expressions for arithmetic pulse templates. However this will not produce reasonable results when the other PT is not atomic because the waveform i.e. the transformation will not get the correct time during sampling of a composite PT.
One could circumvent this by adding a time delay for SequencePT and ForLoopPT but if there is a RepetitionPT it cannot be handled correctly because the waveform itself is not actually repeated i.e. it needs to be unrolled.
We could adapt the
Program
type to be more powerful and cover the representation of a modulated or otherwise altered sub-program. This could allow efficient playback on supporting hardware.The current solution is to enforce atomicity via the newly added
_is_atomic
method.Examples will be added in a separate PR.