time_reverse_pwc
- Graph.time_reverse_pwc(pwc, *, name=None)
Reverse in time a piecewise-constant function.
- Parameters:
pwc (Pwc) – The piecewise-constant function \(v(t)\) to reverse.
name (str or None, optional) – The name of the node.
- Returns:
The piecewise-constant function \(w(t)\) defined by \(w(t)=v(\tau-t)\) for \(0\leq t\leq \tau\), where \(\tau\) is the duration of \(v(t)\).
- Return type:
See also
symmetrize_pwc
Symmetrize Pwcs.
time_concatenate_pwc
Concatenate Pwcs in time.
Notes
For more information on Pwc nodes see the Working with time-dependent functions in Boulder Opal topic.
Examples
Reverse a piecewise constant function.
>>> x = graph.pwc(durations=np.array([0.1, 0.5, 0.3]), values=np.array([1, 2, 3])) >>> graph.time_reverse_pwc(x, name="reverse") <Pwc: name="reverse", operation_name="time_reverse_pwc", value_shape=(), batch_shape=()> >>> result = qctrl.functions.calculate_graph(graph=graph, output_node_names=["reverse"]) >>> result.output["reverse"] [{'duration': 0.3, 'value': 3.0}, {'duration': 0.5, 'value': 2.0}, {'duration': 0.1, 'value': 1.0}]