iqm.benchmarks.compressive_gst.mgst.optimization.Hess_evals#
- iqm.benchmarks.compressive_gst.mgst.optimization.Hess_evals(K: ndarray, E: ndarray, rho: ndarray, y: ndarray, J: ndarray) ndarray#
Compute eigenvalues of the Euclidean Hessian.
- Parameters:
K (ndarray) – Current position
E (ndarray) – Current POVM estimate
rho (ndarray) – Current initial state estimate
y (ndarray) – 2D array of measurement outcomes for sequences in J; The columns contain the outcome probabilities for different povm elements
J (ndarray) – 2D array where each row contains the gate indices of a gate sequence
- Returns:
Eigenvalues of the Euclidean Hessian for the Kraus operators at position (K,E,rho)
- Return type: