mindquantum.algorithm.library.mat_to_op

mindquantum.algorithm.library.mat_to_op(mat, little_endian: bool = True)[source]

Convert a matrix to a QubitOperator. Default output is in little endian.

Parameters

mat – the qubit matrix that needs to be converted to a QubitOperator.
little_endian (bool) – whether the qubit order is little endian. This means the leftmost qubit is the qubit with the highest index. Default: True.

Returns

QubitOperator, the QubitOperator obtained after the matrix conversion.

Examples

>>> import numpy as np
>>> from mindquantum.algorithm.library.qudit_mapping import mat_to_op
>>> mat = np.array([[1, 0, 0, 1], [0, 1, 1, 0], [0, 1, 1, 0], [1, 0, 0, 1]])
>>> print(mat_to_op(mat, 2))
1 [] +
1 [X0 X1]