Closed
Description
Environment
- Qiskit Terra version: 0.24.1
- Python version: 3.11.3
What is happening?
The call gate.control(num_ctrl_qubits) is raising an unexpected error when gate is one of the 2-qubit interaction RXXGate, RYYGate, RZZGate, RZXGate and num_ctrl_qubits is greater than 1.
How can we reproduce the issue?
from qiskit.circuit import Parameter
from qiskit.circuit.library import RXXGate
p = Parameter('p')
gate = RXXGate(p).control(2)What should happen?
The code above should work and return a multi-controlled parametric RXXGate.