Metrology of microwave fields based on trap-loss spectroscopy with cold Rydberg atoms
- URL: http://arxiv.org/abs/2404.17445v1
- Date: Fri, 26 Apr 2024 14:30:18 GMT
- Title: Metrology of microwave fields based on trap-loss spectroscopy with cold Rydberg atoms
- Authors: Romain Duverger, Alexis Bonnin, Romain Granier, Quentin Marolleau, Cédric Blanchard, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre Bresson, Sylvain Schwartz,
- Abstract summary: We demonstrate a new approach for the metrology of microwave fields based on the trap-loss-spectroscopy of cold Rydberg atoms in a magneto-optical trap.
Compared to state-of-the-art sensors using room-temperature vapors, cold atoms allow longer interaction times, better isolation from the environment and a reduced Doppler effect.
- Score: 32.73124984242397
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We demonstrate a new approach for the metrology of microwave fields based on the trap-loss-spectroscopy of cold Rydberg atoms in a magneto-optical trap. Compared to state-of-the-art sensors using room-temperature vapors, cold atoms allow longer interaction times, better isolation from the environment and a reduced Doppler effect. Our approach is particularly simple as the detection relies on fluorescence measurements only. Moreover, our signal is well described by a two-level model across a broad measurement range, allowing in principle to reconstruct the amplitude and the frequency of the microwave field simultaneously without the need for an external reference field. We report on a scale factor linearity at the percent level and no noticeable drifts over two hours, paving the way for new applications of cold Rydberg atoms in metrology such as calibrating blackbody shifts in state-of-the-art optical clocks, monitoring the Earth cryosphere from space, measuring the cosmic microwave background or searching for dark matter.
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