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qiskit.quantum_info.StabilizerState.expectation_value

StabilizerState.expectation_value(oper, qargs=None)[ソース]

Compute the expectation value of a Pauli operator.

パラメータ
  • oper (Pauli) – a Pauli operator to evaluate expval.

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

戻り値

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

戻り値の型

complex

例外

QiskitError – if oper is not a Pauli operator.