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---
title: SetSuperOp (v0.29)
description: API reference for qiskit.providers.aer.library.SetSuperOp in qiskit v0.29
in_page_toc_min_heading_level: 1
python_api_type: class
python_api_name: qiskit.providers.aer.library.SetSuperOp
---
# SetSuperOp
<Class id="qiskit.providers.aer.library.SetSuperOp" isDedicatedPage={true} github="https://github.com/qiskit/qiskit-aer/tree/stable/0.8/qiskit/providers/aer/library/set_instructions/set_superop.py" signature="SetSuperOp(state)" modifiers="class">
Bases: `qiskit.circuit.instruction.Instruction`
Set superop state of the simulator
Create new instruction to set the superop simulator state.
**Parameters**
**state** (*QuantumChannel*) A CPTP quantum channel.
**Raises**
**ExtensionError** if the input QuantumChannel is not CPTP.
<Admonition title="Note" type="note">
This set instruction must always be performed on the full width of qubits in a circuit, otherwise an exception will be raised during simulation.
</Admonition>
## Methods
<span id="qiskit-providers-aer-library-setsuperop-add-decomposition" />
### add\_decomposition
<Function id="qiskit.providers.aer.library.SetSuperOp.add_decomposition" signature="SetSuperOp.add_decomposition(decomposition)">
Add a decomposition of the instruction to the SessionEquivalenceLibrary.
</Function>
<span id="qiskit-providers-aer-library-setsuperop-assemble" />
### assemble
<Function id="qiskit.providers.aer.library.SetSuperOp.assemble" signature="SetSuperOp.assemble()">
Assemble a QasmQobjInstruction
</Function>
<span id="qiskit-providers-aer-library-setsuperop-broadcast-arguments" />
### broadcast\_arguments
<Function id="qiskit.providers.aer.library.SetSuperOp.broadcast_arguments" signature="SetSuperOp.broadcast_arguments(qargs, cargs)">
Validation of the arguments.
**Parameters**
* **qargs** (*List*) List of quantum bit arguments.
* **cargs** (*List*) List of classical bit arguments.
**Yields**
*Tuple(List, List)* A tuple with single arguments.
**Raises**
**CircuitError** If the input is not valid. For example, the number of arguments does not match the gate expectation.
</Function>
<span id="qiskit-providers-aer-library-setsuperop-c-if" />
### c\_if
<Function id="qiskit.providers.aer.library.SetSuperOp.c_if" signature="SetSuperOp.c_if(classical, val)">
Add classical condition on register or cbit classical and value val.
</Function>
<span id="qiskit-providers-aer-library-setsuperop-copy" />
### copy
<Function id="qiskit.providers.aer.library.SetSuperOp.copy" signature="SetSuperOp.copy(name=None)">
Copy of the instruction.
**Parameters**
**name** (*str*) name to be given to the copied circuit, if None then the name stays the same.
**Returns**
**a copy of the current instruction, with the name**
updated if it was provided
**Return type**
[qiskit.circuit.Instruction](qiskit.circuit.Instruction "qiskit.circuit.Instruction")
</Function>
<span id="qiskit-providers-aer-library-setsuperop-inverse" />
### inverse
<Function id="qiskit.providers.aer.library.SetSuperOp.inverse" signature="SetSuperOp.inverse()">
Invert this instruction.
If the instruction is composite (i.e. has a definition), then its definition will be recursively inverted.
Special instructions inheriting from Instruction can implement their own inverse (e.g. T and Tdg, Barrier, etc.)
**Returns**
a fresh instruction for the inverse
**Return type**
[qiskit.circuit.Instruction](qiskit.circuit.Instruction "qiskit.circuit.Instruction")
**Raises**
**CircuitError** if the instruction is not composite and an inverse has not been implemented for it.
</Function>
<span id="qiskit-providers-aer-library-setsuperop-is-parameterized" />
### is\_parameterized
<Function id="qiskit.providers.aer.library.SetSuperOp.is_parameterized" signature="SetSuperOp.is_parameterized()">
Return True .IFF. instruction is parameterized else False
</Function>
<span id="qiskit-providers-aer-library-setsuperop-mirror" />
### mirror
<Function id="qiskit.providers.aer.library.SetSuperOp.mirror" signature="SetSuperOp.mirror()">
DEPRECATED: use instruction.reverse\_ops().
**Returns**
**a new instruction with sub-instructions**
reversed.
**Return type**
[qiskit.circuit.Instruction](qiskit.circuit.Instruction "qiskit.circuit.Instruction")
</Function>
<span id="qiskit-providers-aer-library-setsuperop-qasm" />
### qasm
<Function id="qiskit.providers.aer.library.SetSuperOp.qasm" signature="SetSuperOp.qasm()">
Return a default OpenQASM string for the instruction.
Derived instructions may override this to print in a different format (e.g. measure q\[0] -> c\[0];).
</Function>
<span id="qiskit-providers-aer-library-setsuperop-repeat" />
### repeat
<Function id="qiskit.providers.aer.library.SetSuperOp.repeat" signature="SetSuperOp.repeat(n)">
Creates an instruction with gate repeated n amount of times.
**Parameters**
**n** (*int*) Number of times to repeat the instruction
**Returns**
Containing the definition.
**Return type**
[qiskit.circuit.Instruction](qiskit.circuit.Instruction "qiskit.circuit.Instruction")
**Raises**
**CircuitError** If n \< 1.
</Function>
<span id="qiskit-providers-aer-library-setsuperop-reverse-ops" />
### reverse\_ops
<Function id="qiskit.providers.aer.library.SetSuperOp.reverse_ops" signature="SetSuperOp.reverse_ops()">
For a composite instruction, reverse the order of sub-instructions.
This is done by recursively reversing all sub-instructions. It does not invert any gate.
**Returns**
**a new instruction with**
sub-instructions reversed.
**Return type**
[qiskit.circuit.Instruction](qiskit.circuit.Instruction "qiskit.circuit.Instruction")
</Function>
<span id="qiskit-providers-aer-library-setsuperop-soft-compare" />
### soft\_compare
<Function id="qiskit.providers.aer.library.SetSuperOp.soft_compare" signature="SetSuperOp.soft_compare(other)">
Soft comparison between gates. Their names, number of qubits, and classical bit numbers must match. The number of parameters must match. Each parameter is compared. If one is a ParameterExpression then it is not taken into account.
**Parameters**
**other** (*instruction*) other instruction.
**Returns**
are self and other equal up to parameter expressions.
**Return type**
bool
</Function>
<span id="qiskit-providers-aer-library-setsuperop-validate-parameter" />
### validate\_parameter
<Function id="qiskit.providers.aer.library.SetSuperOp.validate_parameter" signature="SetSuperOp.validate_parameter(parameter)">
Instruction parameters has no validation or normalization.
</Function>
## Attributes
### decompositions
<Attribute id="qiskit.providers.aer.library.SetSuperOp.decompositions">
Get the decompositions of the instruction from the SessionEquivalenceLibrary.
</Attribute>
### definition
<Attribute id="qiskit.providers.aer.library.SetSuperOp.definition">
Return definition in terms of other basic gates.
</Attribute>
### duration
<Attribute id="qiskit.providers.aer.library.SetSuperOp.duration">
Get the duration.
</Attribute>
### label
<Attribute id="qiskit.providers.aer.library.SetSuperOp.label">
Return instruction label
**Return type**
`str`
</Attribute>
### params
<Attribute id="qiskit.providers.aer.library.SetSuperOp.params">
return instruction params.
</Attribute>
### unit
<Attribute id="qiskit.providers.aer.library.SetSuperOp.unit">
Get the time unit of duration.
</Attribute>
</Class>