Electrometry of Charged Particles with Rydberg Atoms

Rydberg atoms, with their large polarizability, allow us for measurement of weak external electric fields. We measure the electric field of passing charged particles via the Stark shift in Rydberg Rubidium atoms. In addition, low frequency and DC-electric field strength from an electron beam are detected via electromagnetically induced transparency (EIT). Moreover, by measuring Stark shift, we plan to map the trajectory of electrons passing through a Rubidium vapor in a Rydberg state. Our prototype will be implemented on the beamline at the Jefferson laboratory as a novel technique for tracking charged particles.