iqm.benchmarks.compressive_gst.mgst.optimization.lineobjf_gauge_geodesic

iqm.benchmarks.compressive_gst.mgst.optimization.lineobjf_gauge_geodesic#

iqm.benchmarks.compressive_gst.mgst.optimization.lineobjf_gauge_geodesic(a: float, Delta: ndarray, U: ndarray, gates: list[ndarray], target_gates: list[ndarray], weights: list[float] | None) → float#

Compute objective function at position on geodesic for gauge optimization Parameters.

Parameters:

  • a (float) – Geodesic curve parameter

  • Delta (ndarray) – Element of the tangent space at U and local direction of the geodesic

  • U (ndarray) – Current gauge transformation matrix

  • gates (list[ndarray]) – Current gate, POVM, and state estimates [X, E, rho]

  • target_gates (list[ndarray]) – Target gates, POVM, and state [X_target, E_target, rho_target]

  • weights (list[float] | None) – Weights for gates and SPAM

Returns:

Objective function value at new position along the geodesic

Return type:

float

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