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I am working on a simple quantum circuit identity. I proved it on paper with the tensor product, but i'm having trouble showing that with qiskit. I know I need to measure them somehow but i don't know how. Can someone help? :)

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  • $\begingroup$ Do you mean proving circuit equivalence? Neither of those circuits is the identity circuit. $\endgroup$
    – orlp
    Apr 18 '20 at 0:03
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You can check whether the unitary matrices are equivalent.

def circuits_equivalent(a, b):
    au = Operator(a)
    bu = Operator(b)
    return au.dim == bu.dim and np.allclose(au.data, bu.data)
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