Pratik Patnaik

> There's yet no `sqrt(iSwap)`-based decomposition in Qiskit -- do you mean a decomposition as described in https://arxiv.org/pdf/2105.06074v3? If yes, there's ongoing work (#9375) which could be taken up again...

> @ProThicc instead of using `add_control` , have you tried using the internal `control` method? like this: `qca_gate_reduced = gate.control(label='test', num_ctrl_qubits=1, ctrl_state=1)` When I try that I get this error,...

> @ProThicc I highly suspect you have an old version. If you look at [this line](https://github.com/Qiskit/qiskit/blob/87aa89c19387ef7ff4177ef5144f60119da392e3/qiskit/circuit/library/standard_gates/u.py#L128) , you'll see the default 0 for gamma. import qiskit qiskit.version.get_version_info() >'1.1.0' Also the...

> @ProThicc hmmm interesting. Well if you look at the error you sent above you can see the invocation of the method I referenced in the error: > > ```...