论文标题
直接重建具有热原子的1D光学晶格的频带结构
Direct reconstruction of the band structure of a 1D optical lattice with thermal atoms
论文作者
论文摘要
我们报告了一种简单的方法，该方法使用热云的热云重建了1D光学晶格的频带结构，并具有大约两光子后坐力的动量扩散。我们会使用飞行时间吸收图像图像暴露于驻波电势的热云的动量分布并观察到独特的特征。在数值计算的支持下，我们解释了它们的外观，并展示了如何直接使用它们直接重建完整的频段结构。虽然这可以用作精确的晶格深度校准工具，但我们还提出了一种以单发方式估算晶格深度的方法。
We report on a simple method to reconstruct the band structure of a 1D optical lattice using a thermal cloud with a momentum spread of about two-photon recoils. We image the momentum distribution of a thermal cloud exposed to a standing wave potential using time-of-flight absorption images and observe unique features. With the support of numerical calculations, we explain their appearance and show how they can be used to reconstruct the full band-structure directly. While this can serve as a precise lattice depth calibration tool, we additionally propose a method to estimate the lattice depth in a single-shot manner.
