iqm.benchmarks.utils.get_tomography_matrix#

iqm.benchmarks.utils.get_tomography_matrix(pauli_expectations: Dict[str, float]) → ndarray#

Reconstructs a density matrix from given Pauli expectations.

Parameters:

pauli_expectations (Dict[str, float]) – A dictionary of Pauli expectations, with keys being Pauli strings.

Raises:

ValueError – If not all 4**n Pauli expectations are specified.

Returns:

A tomographically reconstructed density matrix.

Return type:

np.ndarray