pygsti.state_to_pauli_density_vec

pygsti.state_to_pauli_density_vec(state_vec)

Convert a single qubit state vector into a density matrix.

Parameters:state_vec (list or tuple) – State vector in the sigma-z basis, len(state_vec) == 2
Returns:The 2x2 density matrix of the pure state given by state_vec, given as a 4x1 column vector in the Pauli basis.
Return type:numpy array