qiskit.result.sampled_expectation_value¶

sampled_expectation_value(dist, oper)[source]¶

Computes expectation value from a sampled distribution

Note that passing a raw dict requires bit-string keys.

Paramètres

dist (Counts or QuasiDistribution or ProbDistribution or dict) – Input sampled distribution
oper (str or Pauli or PauliOp or PauliSumOp or SparsePauliOp) – The operator for the observable

Renvoie

The expectation value

Type renvoyé

float

Lève

QiskitError – if the input distribution or operator is an invalid type