近日，华中科技大学的周敏康教授及其研究小组取得一项新进展。经过不懈努力，他们实现磁场对多波原子干涉仪频域影响的表征。相关研究成果已于2023年12月11日国际知名学术期刊《物理评论A》上发表。

本文介绍了一种新型的磁场敏感多波原子拉姆齐干涉仪，其基于射频场耦合塞曼态。研究人员对该干涉仪的低通滤波特性的频域传递函数进行了理论推导和实验测量。此外，他们还探讨了该传递函数在干涉条纹恢复中的潜在应用方案。由于测量涉及到交流磁场，他们采用了基于拉曼光谱的解决方案来校准真空室中原子位置的实际交流磁场振幅。

本工作的成果将有助于提升原子干涉仪的性能，同时也可应用于基于拉姆齐干涉的系统和自旋玻色-爱因斯坦凝聚（BEC）实验。

附：英文原文

Title: Characterizing the impact of the magnetic field in the frequency domain for a multiwave atom interferometer

Author: Xudong Ren, Wenhua Yan, Yukun Yang, Xiaobing Deng, Wenjie Xu, Zhongkun Hu, Minkang Zhou

Issue&Volume: 2023/12/11

Abstract: We implement a magnetic-field-sensitive multiwave atom Ramsey interferometer based on radio-frequency (RF) field-coupled Zeeman states, and we theoretically derive and experimentally measure its frequency-domain transfer function with low-pass filtering characteristics. In addition, we investigate a potential application scheme of the transfer functions for interference fringe recovery. As the measurements involve the ac magnetic field, a Raman spectrum-based solution is implemented to calibrate the actual ac magnetic field amplitude at the position of the atom inside the vacuum chamber. The methods demonstrated in this work will help to improve the performance of the atom interferometer and are also useful in Ramsey interference-based systems and spinor Bose-Einstein condensates (BEC) experiments.

DOI: 10.1103/PhysRevA.108.063309

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.063309