Rydberg-atom RF Sensors for Direction Finding and Geolocation (RADARS)

ColdQuanta, in partnership with Dr. Zoya Popovic at the University of Colorado at Boulder, proposes to develop a three-dimensional quantum-enhanced radio-frequency (RF) signal sensor and direction finder. Our approach combines Rydberg-atom-based RF electrometry and discrete lens arrays (DLAs) of planar antennas. The DLA will serve as a Fourier optic for an incident wave, and a Rydberg-atom RF electrometer will measure the Fourier transform at the focal plane. The precision with which the direction of arrival can be determined depends foremost upon the spatial resolution with which the Fourier transform can be measured. In this regard, Rydberg-atom RF electrometry offers significant benefits over receivers based on antennas, including improved sensitivity and signal-to-noise ratio, sub-wavelength resolution, and accuracy that is determined by atomic structure.