A new quantum sensor has been developed which could detect the RF spectrum and many real-world signals. Thus making a great change to the communication applications. Thanks to Army Researchers. They have developed this quantum sensor that could sample the RF spectrum from zero to 20GHz. Also, it could detect communication signals, FM, and AM radio.
To measure the portion of the spectrum, the Rydberg sensor makes use of the laser beams that creates Rydberg atoms above the microwave circuit. Being sensitive to the circuit voltage, the Rydberg atoms enable the device to be used as a sensitive probe for the range of signals in the RF spectrum.
Dr. Kevin Cox, a researcher at DEVCOM, Army Research Laboratory, said that "the earlier demonstrations of the quantum sensors could only sense some specific or small regions of the RF spectrum, but now for the first time the sensor works at a range of frequencies ." He also said that the sensors could be a new application for the soldiers working at complex electromagnetic battlespace."
The Rydberg spectrum analyzer could cut out the limitations of electronics in the frequency range, bandwidth, and sensitivity. The quantum sensors developed could provide better sensitivity and accuracy to detect the communication signals. The researchers are now trying to make developments in the Rydberg spectrum analyzer to make improvements in its signal sensitivity.
Army Researcher Cox said that " both engineering and physics is essential to make the Rydberg analyzer to be integrated to the testable device. As a first step, we must understand how to improve the device performance, when the sensor size gets decreased. The Army is one of the developers of Rydberg sensors and they expect more research to the technology to make it to reality."