INRiM develops quantum technologies that build on time/frequency metrology and extend it to new services. The Italian Quantum Backbone provides a national testbed for accurate time and frequency distribution via optical fiber, clock comparisons, QKD and interferometric remote sensing.

On the device side, INRiM pursues chip-scale optical clocks under strict Size-Weight-and-Power constraints, including a miniaturized optical frequency standard on the two-photon transition of 87Rb. Micro-fabricated atomic references are combined with integrated photonics, e.g., silicon-nitride micro-ring resonators, to enable optical-to-microwave conversion and compact comb generation.

Quantum sensing and hybrid platforms include mixtures of ultracold atoms with trapped ions, multi-photon photonics and, within COMPASS, an ultracold Yb-Cr molecular platform for an eEDM search.