NIST researchers have demonstrated an atom-based sensor that can determine the direction of incoming radio signals, a key component for potential atomic communications systems. The sensor uses gaseous cesium atoms in a high-energy state, which are sensitive to electromagnetic fields. By measuring phase differences between signals at two locations inside the atomic vapor cell, researchers can calculate the signal’s direction of arrival.
This work brings NIST one step closer to a true atom-based communication system that could benefit 5G and beyond. The selected transmission frequency could be used in future wireless communications systems. Atom-based sensors have potential advantages over conventional technologies, including smaller physical size, reduced susceptibility to interference, and universal measurements due to the identical nature of atoms.
Keywords: Atomic, Communications, Metrology, Quantum, Sensors
