论文标题
通过在实际量子硬件上随机操作来纠正连贯的错误
Correcting Coherent Errors by Random Operation on Actual Quantum Hardware
论文作者
论文摘要
表征和减轻当前嘈杂的中间规模设备中的错误和减轻错误对于提高下一代量子硬件的性能很重要。为了研究影响量子计算的不同噪声机制的重要性，我们在实现回声实验的实际量子处理器中对单量子器进行完整的量子过程断层扫描。除了已经包含在标准模型中的错误源外，获得的结果还显示了相干误差的主要作用，我们实际上通过将随机的单Qubit单位物插入量子电路中，这实际上是纠正的，从而显着增加了电路的长度，而在实际量子硬件上的量子计算产生了可靠的结果。
Characterizing and mitigating errors in current noisy intermediate-scale devices is important to improve performance of next generations of quantum hardware. In order to investigate the importance of the different noise mechanisms affecting quantum computation, we perform full quantum process tomography of single qubits in a real quantum processor in which echo experiments are implemented. Besides error sources already included in standard models, the obtained results show the dominant role of coherent errors, which we practically correct by inserting random single-qubit unitaries in the quantum circuit, significantly increasing the circuit length over which quantum computations on actual quantum hardware produce reliable results.
