Laser cooling and trapping for experiments at the interface of matter and antimatter

反氢可以由反质子通过与正电子素原子（Ps）的电荷交换产生;一个电子和一个正电子的结合态。最近已经通过数值计算表明，电荷交换反应截面可以令人惊讶地大，特别是对于Ps的激发态。然而，这一系统很复杂，需要进一步开展工作。在这里，我们的目标是联合收割机冷原子离子和Ps在一个装置中的电荷共轭过程，即通过电荷交换从Ps创建冷中性原子的实验研究。该项目将调查合适的几何形状相结合的Ps生产，激光激发和离子捕获，这将被集成到正电子束线。该项目将产生通常适合反氢合成和操纵的激光冷却和捕获几何形状，从而为利用量子技术（如反氢物理中的原子传感器）创建平台。

Antihydrogen can be produced from antiprotons by charge exchange with positronium atoms (Ps); the bound state of an electron and a positron. It has recently been shown by numerical calculations that the charge exchange reaction cross-section can be surprisingly large, especially for excited states of Ps. However, the system is complex and requires further work. Here, we aim to combine cold atomic ions and Ps in one apparatus in an experimental study of the charge conjugate process, i.e. creating cold neutral atoms via charge exchange from Ps. The project will investigate suitable geometries for combining Ps production, laser excitation and ion trapping, which will be integrated into the positron beamline. The project will yield laser cooling and trapping geometries generally suitable for antihydrogen synthesis and manipulation, thus creating platforms for making use of quantum technologies such as atomic sensors in antihydrogen physics.