A team of physicists from the U.S., Poland and Germany proposes to use quantum sensor networks such as atomic clocks of the GPS network or sensors from the Gnome collaboration (a network of shielded atomic magnetometers made up of 13 stations placed strategically on four continents—each of which is equipped with a magnetometer that has sub-picotesla sensitivity) to detect exotic ultralight fields (ELDs). In their paper published in the journal Nature Astronomy, the group describes theoretical calculations to predict the types of signals that might make up ELDs and how they might be detected.