论文标题
使用光学频率梳子同时进行双种物种激光冷却
Simultaneous dual-species laser cooling using an optical frequency comb
论文作者
论文摘要
我们使用光学频率梳子演示了$^{87} $ rb和$^{85} $ rb原子的1D同时激光冷却。通过调节脉冲重复频率和偏移频率，调整了频率频谱，以确保从冷却过渡中同时对两个不同的频率梳模式进行红色，这是每个物种的一种模式。从$^{85,87} $ rb原子的预冷云开始，我们在多普勒温度下，使用两个反向传播的$σ$σ$σ$σ{+} $/$σ$σ$ t { - } $ polarized^{ - } $ - 极性束。结果表明，同时双物种频率梳冷却不会影响单个原子种类的冷却特性。这项工作的结果表明，可以使用单个频率梳子来源同时冷却几种原子。这种基于梳子的多通道激光冷却可能会在空间应用和多种物种相互作用的研究中带来多物种原子干涉仪的重大进展。
We demonstrate 1D simultaneous laser cooling of $^{87}$Rb and $^{85}$Rb atoms using an optical frequency comb. By adjusting the pulse repetition frequency and the offset frequency, the frequency comb spectrum is tuned to ensure that two distinct frequency comb modes are simultaneously red-detuned from the cooling transitions, one mode for each species. Starting from a pre-cooled cloud of $^{85,87}$Rb atoms at above-Doppler temperatures, we show simultaneous cooling of both species down to the Doppler temperature using two counter-propagating $σ$$^{+}$/$σ$$^{-}$-polarized beams from the frequency comb. The results indicate that simultaneous dual-species frequency comb cooling does not affect the cooling characteristics of individual atomic species. The results of this work imply that several atomic species could be cooled simultaneously using a single frequency comb source. This comb-based multi-channel laser cooling could bring significant advances in multi-species atom interferometers for space applications and in the study of multi-species interactions.
