Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Harvard-MIT Center for Ultracold Atoms, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2018 Aug 24;121(8):083201. doi: 10.1103/PhysRevLett.121.083201.
We report on nondestructive imaging of optically trapped calcium monofluoride molecules using in situ Λ-enhanced gray molasses cooling. 200 times more fluorescence is obtained compared to destructive on-resonance imaging, and the trapped molecules remain at a temperature of 20 μK. The achieved number of scattered photons makes possible nondestructive single-shot detection of single molecules with high fidelity.
我们报告了使用在位 Λ 增强灰粘滞冷却对光学俘获的氟化钙分子进行无损成像。与破坏性的共振成像相比，获得的荧光强度提高了 200 倍，并且俘获的分子仍然保持在 20μK 的温度。实现的散射光子数使得有可能以高保真度对单个分子进行无损单-shot 检测。
