CCZ gates aren't accepted by the statevector_simulator

[tnemoz]

Informations

• Qiskit Aer version: 0.13.3
• Python version: 3.11.8
• Operating system: Arch Linux

What is the current behavior?

The ccz gate isn't accepted by the statevector_simulator.

Note that it is possible that the problem also happens with other gates or simulators, I haven't tested them.

Steps to reproduce the problem

from qiskit_aer import Aer
from qiskit import QuantumCircuit

qc = QuantumCircuit(3)
qc.ccz(0, 1, 2)

sv_sim = Aer.get_backend('statevector_simulator')
result = sv_sim.run(qc).result()

What is the expected behavior?

result should not raise an error. Instead, the following error is returned:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/tristan/bigfiles/PythonVenvs/quantum/lib/python3.11/site-packages/qiskit_aer/jobs/utils.py", line 42, in _wrapper
    return func(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tristan/bigfiles/PythonVenvs/quantum/lib/python3.11/site-packages/qiskit_aer/jobs/aerjob.py", line 114, in result
    return self._future.result(timeout=timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/concurrent/futures/_base.py", line 456, in result
    return self.__get_result()
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/concurrent/futures/_base.py", line 401, in __get_result
    raise self._exception
  File "/usr/lib/python3.11/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tristan/bigfiles/PythonVenvs/quantum/lib/python3.11/site-packages/qiskit_aer/backends/aerbackend.py", line 445, in _execute_circuits_job
    aer_circuits, idx_maps = assemble_circuits(circuits)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tristan/bigfiles/PythonVenvs/quantum/lib/python3.11/site-packages/qiskit_aer/backends/aer_compiler.py", line 953, in assemble_circuits
    aer_circuits, idx_maps = zip(*[assemble_circuit(circuit) for circuit in circuits])
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tristan/bigfiles/PythonVenvs/quantum/lib/python3.11/site-packages/qiskit_aer/backends/aer_compiler.py", line 953, in <listcomp>
    aer_circuits, idx_maps = zip(*[assemble_circuit(circuit) for circuit in circuits])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tristan/bigfiles/PythonVenvs/quantum/lib/python3.11/site-packages/qiskit_aer/backends/aer_compiler.py", line 684, in assemble_circuit
    num_of_aer_ops += _assemble_op(
                      ^^^^^^^^^^^^^
  File "/home/tristan/bigfiles/PythonVenvs/quantum/lib/python3.11/site-packages/qiskit_aer/backends/aer_compiler.py", line 825, in _assemble_op
    aer_circ.gate(name, qubits, params, [], conditional_reg, aer_cond_expr,
ValueError: Invalid gate name :"ccz"

Note that replacing ccz by ccx makes the code run.

Suggested solutions

[doichanj]

statevector simulator does not support ccz gate, so please use transpiler before running circuits

from qiskit_aer import Aer
from qiskit import QuantumCircuit
from qiskit import transpile

qc = QuantumCircuit(3)
qc.ccz(0, 1, 2)

sv_sim = Aer.get_backend('statevector_simulator')
qc_t = transpile(qc,sv_sim,optimization_level=1)
result = sv_sim.run(qc_t).result()

[tnemoz]

I thought this was a bug because the code fails here, where the ccz gate is listed.

Is there a reason for ccx being supported by statevector_simulator but not ccz? If not, would it be possible to move this to a feature request?