feat(M3.3): Remove c, d <> C0 stipulation.#41
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From QuantumLib, we know that the determinant of any unitary matrix is non-zero. Hence in the two cases, for some unitary
P, we have:P = diag c c: Then we haveDeterminant P = c * c <> 0, implyingc <> 0P = diag c d: Then we haveDeterminant P = c * d <> 0, which is exactly what we need