论文标题
rubidium 3D磁磁陷阱中的光子积分束输送
Photonic integrated beam delivery in a rubidium 3D magneto-optical trap
论文作者
论文摘要
冷原子对于精确的原子应用很重要，包括计时和传感。用于产生冷原子的3D磁光陷阱（3D-MOT）将受益于光子整合，以提高可靠性并降低尺寸，重量和成本。这些陷阱需要将多个大面积的准直的激光束传递到原子真空电池。但是，迄今为止，使用集成波导方法的光束传递仍然难以捉摸。我们使用光纤耦合的光子积分电路报告了87RB 3D-MOT的演示，以将所有光束传递到冷却和捕获> 1 x 10^6原子至接近200μk。氮化硅光子电路将纤维耦合的780 nm冷却，并通过波导将光线降低到三毫米宽度的非变化自由空间冷却，并直接将光束直接降低到Rubidium电池。该平面，CMOS铸造型的集成梁传递与其他组件（例如激光器和调节器），有希望的用于冷原子应用的芯片溶液。
Cold atoms are important for precision atomic applications including timekeeping and sensing. The 3D magneto-optical trap (3D-MOT), used to produce cold atoms, will benefit from photonic integration to improve reliability and reduce size, weight, and cost. These traps require the delivery of multiple, large area, collimated laser beams to an atomic vacuum cell. Yet, to date, beam delivery using an integrated waveguide approach has remained elusive. We report the demonstration of a 87Rb 3D-MOT using a fiber-coupled photonic integrated circuit to deliver all beams to cool and trap > 1 x 10^6 atoms to near 200 μK. The silicon nitride photonic circuit transforms fiber-coupled 780 nm cooling and repump light via waveguides to three mm-width non-diverging free-space cooling and repump beams directly to the rubidium cell. This planar, CMOS foundry-compatible integrated beam delivery is compatible with other components, such as lasers and modulators, promising system-on-chip solutions for cold atom applications.
