V+ladder configuration for Rydberg electrometry

Rydberg atom-atom based electric field sensors are a fast-growing commodity. They are ultrabroadband, being able to sense fields ranging from DC to THz. They can receive various communication protocols and can be used for angle-of-arrival in radar-based applications. However, there are currently limitations on the portability of such systems. The diodes needed to achieve Rydberg states in cesium and rubidium are limited in power and host various instabilities, performance, and reliability problems in manufacturing. We demonstrate sensitivite field measurements using a V+ladder scheme that relies on easy to manufacture lasers. An 895 nm laser is used as a probe, a 460 nm laser as the dressing, and a 1060 nm laser as a coupler to the Rydberg state.