Determining angle of arrival of radio frequency fields using subwavelength, amplitude-only measurements of standing waves in a Rydberg atom sensor
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866909931881365504 |
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| author | Talashila, Rajavardhan Watterson, William J. Moser, Benjamin L. Gordon, Joshua A. Artusio-Glimpse, Alexandra B. Prajapati, Nikunjkumar Schlossberger, Noah Simons, Matthew T. Holloway, Christopher L. |
| author_facet | Talashila, Rajavardhan Watterson, William J. Moser, Benjamin L. Gordon, Joshua A. Artusio-Glimpse, Alexandra B. Prajapati, Nikunjkumar Schlossberger, Noah Simons, Matthew T. Holloway, Christopher L. |
| contents | Deep subwavelength RF imaging with atomic Rydberg sensors has overcome fundamental limitations of traditional antennas and enabled ultra-wideband detection of omni-directional time varying fields all in a compact form factor. However, in most applications, Rydberg sensors require the use of a secondary strong RF reference field to serve as a phase reference. Here, we demonstrate a new type of Rydberg sensor for angle-of-arrival (AoA) sensing which utilizes subwavelength imaging of standing wave fields. By placing a metallic plate within the Rydberg cell, we can determine the AoA independent of the strength of incoming RF field and without requiring a secondary strong RF phase reference field. We perform precision AoA measurements with a robotic antenna positioning system for 4.2, 5.0, and 5.7 GHz signals and demonstrate a 1.7 deg polar angular resolution from 0 deg to 60 deg AoA and 4.1 deg over all possible angles. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_09835 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Determining angle of arrival of radio frequency fields using subwavelength, amplitude-only measurements of standing waves in a Rydberg atom sensor Talashila, Rajavardhan Watterson, William J. Moser, Benjamin L. Gordon, Joshua A. Artusio-Glimpse, Alexandra B. Prajapati, Nikunjkumar Schlossberger, Noah Simons, Matthew T. Holloway, Christopher L. Atomic Physics Optics Quantum Physics Deep subwavelength RF imaging with atomic Rydberg sensors has overcome fundamental limitations of traditional antennas and enabled ultra-wideband detection of omni-directional time varying fields all in a compact form factor. However, in most applications, Rydberg sensors require the use of a secondary strong RF reference field to serve as a phase reference. Here, we demonstrate a new type of Rydberg sensor for angle-of-arrival (AoA) sensing which utilizes subwavelength imaging of standing wave fields. By placing a metallic plate within the Rydberg cell, we can determine the AoA independent of the strength of incoming RF field and without requiring a secondary strong RF phase reference field. We perform precision AoA measurements with a robotic antenna positioning system for 4.2, 5.0, and 5.7 GHz signals and demonstrate a 1.7 deg polar angular resolution from 0 deg to 60 deg AoA and 4.1 deg over all possible angles. |
| title | Determining angle of arrival of radio frequency fields using subwavelength, amplitude-only measurements of standing waves in a Rydberg atom sensor |
| topic | Atomic Physics Optics Quantum Physics |
| url | https://arxiv.org/abs/2502.09835 |