qiskit.quantum_info.StabilizerState.expectation_value

StabilizerState.expectation_value(oper, qargs=None)

Compute the expectation value of a Pauli operator.

매개변수

• oper (Pauli) – a Pauli operator to evaluate expval.

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

반환

the expectation value (only 0 or 1 or -1 or i or -i).

반환 형식

complex

예외 발생

QiskitError – if oper is not a Pauli operator.