A Rydberg atom based system for benchmarking mmWave automotive radar chips

Abstract

Rydberg atomic sensors and receivers have enabled sensitive and traceable measurements of RF fields at a wide range of frequencies. Here we demonstrate the detection of electric field amplitude in the extremely high frequency (EHF) band, at $131\mathrm{GHz}$. In our approach we propagate the EHF field in a beam, with control over its direction and polarization at the detector using photonic waveplates. This way, we take advantage of the highest detection sensitivity, registered for collinear propagation and circular polarization. To exhibit the potential for applications in this kind of Rydberg-atom based detection, we perform test measurements on the EHF field emitted from an on-chip radar, planned to be used in automotive industry as a vital sign detector. Our work elucidates practical applications of Rydberg-atom media as well as photonic metamaterial elements.

10 pages, 8 figures

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Cited by in corpus (3)

• Atomic-optical interferometry in fractured loops: a general solution for Rydberg radio frequency receivers
• Electric-field metrology of a terahertz frequency comb using Rydberg atoms
• An Imaging Radar Using a Rydberg Atom Receiver