qiskit.quantum_info.Statevector.expectation_value

Statevector.expectation_value(oper, qargs=None)

Compute the expectation value of an operator.

パラメータ

• oper (Operator) – an operator to evaluate expval of.

• qargs (None or list) – subsystems to apply operator on.

戻り値

the expectation value.

戻り値の型

complex