qiskit.providers.aer.utils.NoiseTransformer.get_const_matrix_from_channel¶
-
static
NoiseTransformer.get_const_matrix_from_channel(channel, symbols)[source]¶ Extract the numeric constant matrix.
- Parameters
channel (matrix) – a 4x4 symbolic matrix.
symbols (list) – The full list [x1, …, xn] of symbols used in the matrix.
- Returns
a 4x4 numeric matrix.
- Return type
matrix
- Additional Information:
Each entry of the 4x4 symbolic input channel matrix is assumed to be a polynomial of the form a1x1 + … + anxn + c. The corresponding entry in the output numeric matrix is c.