论文标题
光栅芯片原子喷泉
A grating-chip atomic fountain
论文作者
论文摘要
冷原子喷泉时钟提供了出色的长期稳定性，因为它们以较大尺寸为代价增加了询问时间。我们使用光栅磁陷阱（GMOT）提出一个紧凑的冷原子喷泉，以激光冷却并以简化的光学设置启动原子。使用连贯的人口捕获对喷泉进行评估，并证明了发射的单杆稳定性提高。用相应的条纹线宽为5 Hz，测量了最高100毫秒的拉姆西时间。该技术可以改善冷原子时钟的短期和长期稳定性，而在便携式应用中保持紧凑。
Cold atom fountain clocks provide exceptional long term stability as they increase interrogation time at the expense of a larger size. We present a compact cold atom fountain using a grating magneto-optical trap (GMOT) to laser cool and launch the atoms in a simplified optical setup. The fountain is evaluated using coherent population trapping and demonstrates improved single-shot stability from the launch. Ramsey times up to 100 ms were measured with a corresponding fringe linewidth of 5 Hz. This technique could improve both short- and long-term stability of cold atom clocks whilst remaining compact for portable applications.
