论文标题
光学镊子阵列中的单分子的双重成像
Bichromatic Imaging of Single Molecules in an Optical Tweezer Array
论文作者
论文摘要
我们报告了一种新型的双重荧光成像方案，用于无背景的单个CAF分子被困在光学镊子阵列中。通过在一个光学转变上收集荧光，同时使用另一个光学进行激光冷却，我们的成像保真度为97.7（2）％，非破坏性检测保真度为95.5（6）％。我们表征了我们方案的损失机制，其中许多与捕获分子的荧光检测相关，包括两光子衰减和由诱捕光引起的高激发状态的掺杂状态。
We report on a novel bichromatic fluorescent imaging scheme for background-free detection of single CaF molecules trapped in an optical tweezer array. By collecting fluorescence on one optical transition while using another for laser-cooling, we achieve an imaging fidelity of 97.7(2)% and a non-destructive detection fidelity of 95.5(6)%. We characterize loss mechanisms of our scheme, many of which are generically relevant to the fluorescent detection of trapped molecules, including two-photon decay and admixtures of higher excited states that are induced by the trapping light.
