迭代相位估计
Iterative phase estimation
摘要：
我们给出了一个迭代算法的相位估计的参数θ，这是在一个对数因子的海森堡极限。与其他方法不同，我们不需要任何纠缠或额外的旋转门，可以以几乎完美的精度执行任意旋转：只需要单一的酉通道副本和基本测量。仿真结果表明该算法是成功的。我们也看看迭代相位估计时，去极化噪声存在。可以看出，该算法仍然是成功的，提供的迭代阶段的数量是低于一定的阈值。
英文摘要：
We give an iterative algorithm for phase estimation of a parameter theta, which is within a logarithmic factor of the Heisenberg limit. Unlike other methods, we do not need any entanglement or an extra rotation gate which can perform arbitrary rotations with almost perfect accuracy: only a single copy of the unitary channel and basic measurements are needed. Simulations show that the algorithm is successful. We also look at iterative phase estimation when depolarizing noise is present. It is seen that the algorithm is still successful provided the number of iterative stages is below a certain threshold.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
