Ignore RepetitionPT body if repetition count <= 0

qutech · Apr 24, 2018 · ec3f119 · ec3f119
1 parent 5a648a3
commit ec3f119
Showing 1 changed file with 10 additions and 7 deletions.
diff --git a/qctoolkit/pulses/repetition_pulse_template.py b/qctoolkit/pulses/repetition_pulse_template.py
@@ -141,20 +141,23 @@ def build_sequence(self,
                        channel_mapping: Dict[ChannelID, Optional[ChannelID]],
                        instruction_block: InstructionBlock) -> None:
         self.validate_parameter_constraints(parameters=parameters)
-
-        body_block = InstructionBlock()
-        body_block.return_ip = InstructionPointer(instruction_block, len(instruction_block))
-
         try:
             real_parameters = {v: parameters[v].get_value() for v in self._repetition_count.variables}
         except KeyError:
             raise ParameterNotProvidedException(next(v for v in self.repetition_count.variables if v not in parameters))
+
         self.insert_measurement_instruction(instruction_block,
                                             parameters=parameters,
                                             measurement_mapping=measurement_mapping)
-        instruction_block.add_instruction_repj(self.get_repetition_count_value(real_parameters), body_block)
-        sequencer.push(self.body, parameters=parameters, conditions=conditions,
-                       window_mapping=measurement_mapping, channel_mapping=channel_mapping, target_block=body_block)
+
+        repetition_count = self.get_repetition_count_value(real_parameters)
+        if repetition_count > 0:
+            body_block = InstructionBlock()
+            body_block.return_ip = InstructionPointer(instruction_block, len(instruction_block))
+
+            instruction_block.add_instruction_repj(repetition_count, body_block)
+            sequencer.push(self.body, parameters=parameters, conditions=conditions,
+                           window_mapping=measurement_mapping, channel_mapping=channel_mapping, target_block=body_block)
 
     def requires_stop(self,
                       parameters: Dict[str, Parameter],