Measurement of the atom number distribution in an optical tweezer using single-photon counting
Measurement of the atom number distribution in an optical tweezer using single-photon counting
复制标题
使用单光子计数测量光镊中的原子数分布
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
A. Browaeys
中科院分区：
文献类型：
--
作者：
A. Fuhrmanek;Y. Sortais;P. Grangier;A. Browaeys
本文提出了一种重建含有几十个冷原子的云的原子数分布的方法。原子首先从磁光阱加载到微观光学偶极阱中，然后在共振光探针中释放，在那里它们经历布朗运动并散射光子。我们计算图像增强器探测到的光子事件的数量。使用我们的检测系统对单个原子的响应作为校准，我们提取了当陷阱装载有多个原子时的原子数分布。原子数分布被发现是兼容的泊松分布。
We demonstrate in this paper a method to reconstruct the atom number distribution of a cloud containing a few tens of cold atoms. The atoms are first loaded from a magneto-optical trap into a microscopic optical dipole trap and then released in a resonant light probe where they undergo a Brownian motion and scatter photons. We count the number of photon events detected on an image intensifier. Using the response of our detection system to a single atom as a calibration, we extract the atom number distribution when the trap is loaded with more than one atom. The atom number distribution is found to be compatible with a Poisson distribution.