New generation of a mobile primary frequency standard based on cold atoms

Abstract

We have constructed a mobile primary frequency standard using intra-cavity cold cesium atoms and the results have shown the advantages of using this kind of system compared to cesium beam standards. Based on the first setup with an expanding cloud of atoms, we can plan the construction of a clock more compact since it has no strict size limitations. In order to assemble the new system even smaller, the development of a system containing lasers, microwave source and cavity in a single box has already begun. The mobile atomic standard based on cold atoms is a possible strategic product with a broad range of applications and an important contribution to a primary standard of high relevance.