qiskit.ignis.mitigation.CompleteExpvalMeasMitigator.required_shots

CompleteExpvalMeasMitigator.required_shots(delta, qubits=None)

Return the number of shots required for expectation value estimation.

This is the number of shots required so that \(|\langle O \rangle_{est} - \langle O \rangle_{true}| < \delta\) with high probability (at least 2/3) and is given by \(4\delta^2 \Gamma^2\) where \(\Gamma^2\) is the mitigation_overhead().

매개변수

• delta (float) – Error tolerance for expectation value estimator.

• qubits (Optional[List[int]]) – Optional, qubits being measured for operator expval.

반환값

the required shots.

반환 형식

int