Military researchers have reported the development of a small quantum sensor that detects communication signals across the entire RF spectrum from 0 to 1 THz. Such coverage with traditional receivers required many systems with separate antennas, amplifiers and other components..
Last year, ultrasensitive Rydberg atoms were used for the first time to detect electric fields and communication signals. but previously, no one was involved in a quantitative description of their sensitivity for the entire working range.
A team of researchers from the US Army Research Laboratory became interested in this direction, and, based on fundamental principles, calculated the channel capacity of such a quantum receiver, and then confirmed it experimentally.
As a result, they created a small and practically undetectable sensor that is sensitive to fluctuations in electric fields in the range of 0 to 1012 Hz. Quantum mechanics allows not only to identify signals across the entire spectrum, but also to accurately calibrate the system, as well as tune its final performance.
What if we could see the entire EM Spectrum?
According to the developers, this device will equip the military with the next generation sensors, will contribute to the development of new communication concepts and signal detection for position determination..
We also previously reported that researchers have proposed the concept of a new material that can conduct both electrons and photons..
text: Ilya Bauer, photo: The Army Research Laboratory