Seminarium Optyczne

Rydberg atoms are an established platform for quantum technologies, with new applications still emerging. Large dipole moment of Rydberg atoms allows for their well-known interacting properties, facilitating quantum gates. The same property also allows for detection of external fields, using transitions between two Rydberg states. Remarkably, these properties hold even in hot-atom vapor cell systems. I will present our results on detecting as well as transducing microwave and terahertz radiation into the optical domain. I will also discuss sensitivity limits, and show how we can achieve detection of thermal radiation, also in cryogenic conditions.I will also hint at ongoing cold-atom based experiments aimed at demonstrating ultimate quantum-metrological limits of sensing.