论文标题
缓解耦合图限制了量子设备上的相关测量误差
Mitigating Coupling Map Constrained Correlated Measurement Errors on Quantum Devices
论文作者
论文摘要
我们引入了一种抑制状态依赖性和相关测量误差的技术，这通常是在现代超导量子设备上观察到的。我们的方法利用了先前的结果，确定相关误差倾向于在量子设备上进行物理定位，以在设备的耦合图上执行特征，并将重叠的测量校准作为一系列稀疏矩阵。我们称此“耦合图校准”。我们定量地证明了我们提出的缓解误差系统设计的优势，跨当前IBM量子设备。我们对公共基准电路的实验结果表明，与常规缓解误差方法相比，错误率的降低率高达$ 41 \％$降低，而无需增加所需的量子设备的执行次数。
We introduce a technique for the suppression of state-dependent and correlated measurement errors, which are commonly observed on modern superconducting quantum devices. Our method leverages previous results, establishing that correlated errors tend to be physically localised on quantum devices to perform characterisations over the coupling map of the device, and to join overlapping measurement calibrations as a series of sparse matrices. We term this `Coupling Map Calibration'. We quantitatively demonstrate the advantages of our proposed error mitigation system design across a range of current IBM quantum devices. Our experimental results on common benchmark circuits demonstrate up to a $41\%$ reduction in the error rate without increasing the number of executions of the quantum device required when compared to conventional error mitigation methods.
