Observable terms (qiskit_addon_cutting.utils.observable_terms)

Utilities for working with the unique terms of a collection of SparsePauliOps.

gather_unique_observable_terms(observables)[source]

Inspect the contents of each observable to find and return the unique Pauli terms.

Return type:

PauliList

Parameters:

observables (Sequence[Pauli | SparsePauliOp] | PauliList)

reconstruct_observable_expvals_from_terms(observables, term_expvals)[source]

Reconstruct the expectation values given the expectation value of each unique term.

Return type:

list[complex]

Parameters:

  • observables (Iterable[Pauli | SparsePauliOp] | PauliList)

  • term_expvals (Mapping[Pauli, float | complex])