Satellite Signal Detection via Rydberg-Atom Receiver

• URL: http://arxiv.org/abs/2506.15439v1
• Date: Wed, 18 Jun 2025 13:13:30 GMT
• Title: Satellite Signal Detection via Rydberg-Atom Receiver
• Authors: Mignwei Lei, Jianquan Zhang, Qun Luo, Zhentao Zhang, Ming Wang, Meng Shi,
• Abstract summary: We introduce a high-gain antenna to focus satellite signals, and then apply into an atomic cell via a microwave cavity.<n>Using microwave-enhanced coupling, the minimum detectable power of incident microwave is down to -128 dBm.<n>Beacon signal from geostationary satellites is captured with Rydberg sensors for the first time, without the need for a low-noise amplifier.
• Score: 4.302929384453449
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Rydberg-atom receivers aim for ultra-high sensitivity to microwave fields through various techniques, but receiving satellite signals has remained a significant challenge, due to the difficulty of capturing weak microwaves over long distances. In this work, we introduce a high-gain antenna to focus satellite signals, and then apply into an atomic cell via a microwave cavity. Using microwave-enhanced coupling, the minimum detectable power of incident microwave is down to -128 dBm, and the corresponding sensitivity is estimated as 21 nV/cm/Hz1/2 at frequency of 3.80 GHz. Furthermore, beacon signal from geostationary satellites is captured with Rydberg sensors for the first time, without the need for a low-noise amplifier. And C-band modulated signals are read out with a signal-to-noise ratio of 8 dB. Our results mark a significant breakthrough in facilitating satellite communications using Rydberg-atom receivers.

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