cirq.kron_factor_4x4_to_2x2s
Splits a 4x4 matrix U = kron(A, B) into A, B, and a global factor.
cirq.kron_factor_4x4_to_2x2s(
matrix: np.ndarray
) -> Tuple[complex, np.ndarray, np.ndarray]
Requires the matrix to be the kronecker product of two 2x2 unitaries.
Requires the matrix to have a non-zero determinant.
Giving an incorrect matrix will cause garbage output.
Args |
|---|
matrix
|
The 4x4 unitary matrix to factor.
|
Returns |
|---|
|
A scalar factor and a pair of 2x2 unit-determinant matrices. The
kronecker product of all three is equal to the given matrix.
|
Raises |
|---|
ValueError
|
The given matrix can't be tensor-factored into 2x2 pieces.
|
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Last updated 2024-06-27 UTC.
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View source on GitHub