论文标题
Pauli错误传播基于量子电路错误缓解量的门重新安排
Pauli Error Propagation-Based Gate Reschedulingfor Quantum Circuit Error Mitigation
论文作者
论文摘要
应仔细设计在嘈杂的量子计算机上运行的嘈杂的中间尺度量子(NISQ)算法,以提高输出状态保真度。尽管已经提出了几种汇编方法来最大程度地减少电路误差,但它们通常会省略不会影响电路深度或栅极计数的详细电路结构信息。在存在量子门错误率的空间变化的情况下,调整电路结构可以在缓解误差中起主要作用。在本文中,我们根据换向规则利用栅极重新排序的自由,以显示门误差传播路径对量子电路输出状态保真度的影响,提出了先进的预测技术来投影电路的成功率,并开发新的编译阶段后Quantum电路映射以提高其可靠性。我们提出的方法已使用具有不同成功指标的各种量子电路进行了验证,这些电路在IBM量子计算机上执行。我们的结果表明,在存在可变栅极误差率的情况下,基于其误差传播路径的重新安排量子门可以显着提高量子电路的保真度。
Noisy Intermediate-Scale Quantum (NISQ) algorithms, which run on noisy quantum computers should be carefully designed to boost the output state fidelity. While several compilation approaches have been proposed to minimize circuit errors, they often omit the detailed circuit structure information that does not affect the circuit depth or the gate count. In the presence of spatial variation in the error rate of the quantum gates, adjusting the circuit structure can play a major role in mitigating errors. In this paper, we exploit the freedom of gate reordering based on the commutation rules to show the impact of gate error propagation paths on the output state fidelity of the quantum circuit, propose advanced predictive techniques to project the success rate of the circuit, and develop a new compilation phase post-quantum circuit mapping to improve its reliability. Our proposed approaches have been validated using a variety of quantum circuits with different success metrics, which are executed on IBM quantum computers. Our results show that rescheduling quantum gates based on their error propagation paths can significantly improve the fidelity of the quantum circuit in the presence of variable gate error rates.