印度科学教育和研究所M. S. Santhanam团队利用原子光学受击转子进行了振幅放大和估计。这一研究成果发表在2025年3月3日出版的《物理评论A》上。

量子受击转子的原子光学实现代表了安德森局域化物理学研究最深入的实验平台之一。在这项工作中，研究组表明，同一平台可用于实现量子算法来执行量子振幅放大（AA），这是格罗弗搜索算法的推广。这是使用通常的脉冲序列结合成熟的拉曼速度选择技术完成的。

研究组认为，该平台非常适合实现AA，因为其定位特性可以通过减少平均运行时间来提高幅度放大算法的性能。该研究还引入了一个脉冲势，该脉冲势渐近地导致最优量子加速，构成了一种互补方法。最后，研究组证明了该方案对脉冲噪声具有相当的鲁棒性，并讨论了该提案中每个组成部分的实验可行性。

附：英文原文

Title: Amplitude amplification and estimation using the atom-optics kicked rotor

Author: Keshav V, M. S. Santhanam

Issue&Volume: 2025/03/03

Abstract: The atom-optics realization of the quantum kicked rotor represents one of the most well-studied experimental platforms for the physics of Anderson localization. In this work, we show that the same platform can be used to implement a quantum algorithm to perform quantum amplitude amplification (AA), a generalization of Grover's search algorithm. This is done using the usual kick sequence in combination with the well established technique of Raman velocity selection. We argue that this platform is well suited to implement AA, as its characteristic property of localization can be exploited to enhance the performance of the amplitude amplification algorithm by reducing its average runtime. We also introduce a kick potential which asymptotically leads to the optimal quantum speedup, constituting a complementary approach. Finally, we demonstrate that the scheme is fairly robust to noise in the kicks and discuss the experimental feasibility of each component of our proposal

DOI: 10.1103/PhysRevA.111.032601

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.111.032601