qiskit.providers.aer.utils.NoiseTransformer.transform_by_given_channel

NoiseTransformer.transform_by_given_channel(channel_matrices, const_channel_matrix)

Transform by by quantum channels.

This method creates objective function representing the Hilbert-Schmidt norm of the matrix (A-B) obtained as the difference of the input noise channel and the output channel we wish to determine.

This function is represented by a matrix P and a vector q, such that f(x) = 1/2(x*P*x)+q*x where x is the vector we wish to minimize, where x represents probabilities for the noise operators that construct the output channel

Parameters

• channel_matrices (list) – A list of 4x4 symbolic matrices

• const_channel_matrix (matrix) – a 4x4 constant matrix

Returns

a list of the optimal probabilities for the channel matrices, determined by the quadratic program solver

Return type

list