Investigation of fluorescence versus transmission readout for three-photon Rydberg excitation used in electrometry
Nikunjkumar Prajapati, Samuel Berweger, Andrew P. Rotunno, Alexandra B. Artusio‐Glimpse, Noah Schlossberger, Dangka Shylla, William J. Watterson, Matthew T. Simons, David LaMantia, Eric B. Norrgard, Stephen Eckel, Christopher L. Holloway
Abstract
We present a three-photon based fluorescence readout method where the strength of the fluorescence scales with the strength of the radio-frequency field being applied. We compare this method to conventional three-photon electromagnetically induced transparency (EIT) and electromagnetically induced absorption (EIA). Our demonstrated three-photon EIA/EIT sensitivity in the collinear three-photon Cesium system is the best reported to date at roughly 30 (same units). The fluorescence is nearly fourfold better in sensitivity compared to EIA/EIT readout.