How can I convert the unitary matrix $e^frac{ipi}{2}$ into a quantum circuit in Qiskit?

Question

How can I put the unitary matrix $$e^frac{ipi}{2}I$$ to the quantum circuit?
I don't know if it is belong to $$U3(theta, phi, lambda), U2(phi, lambda), U1(lambda)$$
Thanks a lot.

DaftWullie · Answer

$I$ is the identity matrix. In a quantum circuit, it means "do nothing". You don't need to program it in. The global phase doesn't make a difference to this either.

How can I convert the unitary matrix $e^frac{ipi}{2}$ into a quantum circuit in Qiskit?

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