Design and construction of a static electric field analysis system using Rydberg atom

在原子物理学中众所周知的里德堡原子被用于表面物理分析。特别是，为了测量难以测量的微弱静电场，设计并构建了里德堡原子分析系统。虽然静电场是基本的物理性质，但由于探头本身会干扰电场，只要探头是由金属制成的，测量就非常困难。在我们的系统中，由于作为探针的里德堡原子是中性原子，所以它不会对电场产生干扰。虽然在目前的状态下可以观察到20 mV/cm的本底电场，但进一步提高激光器的稳定性等仍是下一步的课题。

Rydberg atoms well known in atomic physics were employed in surface physics analysis. Especially, in order to measure a weak static electric field where measurement is difficult, an analysis system using Rydberg atom was designed and constructed. Although a static electric field is basic physics property, the measurement is very difficult since a probe itself disturbs the electric field as long as the probe is made of metal. In our system the probe doesn't disturb the electric field since the Rydberg atom as the probe is a neutral atom. Although the background electric field of 20mV/cm can be observed in current status, the further improvement of stabilization of laser, etc. remained as a next subject.