- class MatrixExpectation¶
Deprecated: An Expectation converter which converts Operator measurements to be matrix-based so they can be evaluated by matrix multiplication.
Deprecated since version 0.24.0: The class
qiskit.opflow.expectations.matrix_expectation.MatrixExpectationis deprecated as of qiskit-terra 0.24.0. It will be removed no earlier than 3 months after the release date. For code migration guidelines, visit https://qisk.it/opflow_migration.
Methods Defined Here
Compute the variance of the expectation estimator.
Accept an Operator and return a new Operator with the Pauli measurements replaced by Matrix based measurements.