论文标题
从平行量子相估计中估计误差弹性量子幅度
Error Resilient Quantum Amplitude Estimation from Parallel Quantum Phase Estimation
论文作者
论文摘要
我们展示了如何平行相位和振幅估计算法。这可以将量子电路的栅极深度降低到带有小开销的单个Grover操作员的栅极深度。此外，我们表明，对于量子振幅估计，并行化可以导致针对量子错误的弹性有所改善。弹性不是由较低的栅极深度引起的，而是由算法的结构引起的。即使在传统幅度估计中不可能读取出确切或近似解决方案的错误，我们的并行方法为正确的解决方案提供了很高的可能性。标准版本和低深度版本的量子振幅估计的误差弹性结果。提出的方法是专利应用程序的主题[量子计算设备：专利应用程序EP 21207022.1]。
We show how phase and amplitude estimation algorithms can be parallelized. This can reduce the gate depth of the quantum circuits to that of a single Grover operator with a small overhead. Further, we show that for quantum amplitude estimation, the parallelization can lead to vast improvements in resilience against quantum errors. The resilience is not caused by the lower gate depth, but by the structure of the algorithm. Even in cases with errors that make it impossible to read out the exact or approximate solutions from conventional amplitude estimation, our parallel approach provided the correct solution with high probability. The results on error resilience hold for the standard version and for low depth versions of quantum amplitude estimation. Methods presented are subject of a patent application [Quantum computing device: Patent application EP 21207022.1].
