A quantum sensor might allow US Soldiers to detect communication signals over the entire radio frequency spectrum, from 0 to 100 GHz, which is hard to imagine with the standard receiver system. The latest research derives from earlier work on a quantum receiver in 2018 that uses highly excited, super-sensitive atoms called Rydberg atoms to identify communications signals. The outcomes have proved that the Rydberg sensor is capable of detecting signals over the entire spectrum and compare favorably with other established electric-field sensor technologies. Army scientists will now focus to improve the sensitivity to detect even weaker signals and extend detection protocols for more complicated waveforms.