Radiofrequency receiver based on isotropic solid-state spins
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866908471695245312 |
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| author | Robertson, Islay O. Johnson, Brett C. Thalassinos, Giannis Scholten, Sam C. Rietwyk, Kevin J. Gibson, Brant Tetienne, Jean-Philippe Broadway, David A. |
| author_facet | Robertson, Islay O. Johnson, Brett C. Thalassinos, Giannis Scholten, Sam C. Rietwyk, Kevin J. Gibson, Brant Tetienne, Jean-Philippe Broadway, David A. |
| contents | Optically addressable solid-state spins have been proposed as robust radiofrequency (RF)-optical transducers sensitive to a specific RF frequency tuned by an external static magnetic field, but often require precise field alignment with the system's symmetry axis. Here we introduce an isotropic solid-state spin system, namely weakly coupled spin pairs in hexagonal boron nitride (hBN), which acts as an RF-optical transducer independent of the direction of the tuning magnetic field, allowing greatly simplified experimental design. Using this platform, we first demonstrate a single-frequency RF receiver with frequency tunability from 0.1 to 19 GHz. We next demonstrate an instantaneous wideband RF spectrum analyser by applying a magnetic field gradient to encode RF frequency into spatial position. Finally, we utilise the spectrum analyser to detect free-space-transmitted RF signals matching the strength and frequency of typical Wi-Fi signals. This work exemplifies the unique capabilities of isotropic spins in hBN to operate as RF sensors, while circumventing the challenging requirement of precisely aligned magnetic fields facing conventional solid-state spins. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_00430 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Radiofrequency receiver based on isotropic solid-state spins Robertson, Islay O. Johnson, Brett C. Thalassinos, Giannis Scholten, Sam C. Rietwyk, Kevin J. Gibson, Brant Tetienne, Jean-Philippe Broadway, David A. Mesoscale and Nanoscale Physics Optically addressable solid-state spins have been proposed as robust radiofrequency (RF)-optical transducers sensitive to a specific RF frequency tuned by an external static magnetic field, but often require precise field alignment with the system's symmetry axis. Here we introduce an isotropic solid-state spin system, namely weakly coupled spin pairs in hexagonal boron nitride (hBN), which acts as an RF-optical transducer independent of the direction of the tuning magnetic field, allowing greatly simplified experimental design. Using this platform, we first demonstrate a single-frequency RF receiver with frequency tunability from 0.1 to 19 GHz. We next demonstrate an instantaneous wideband RF spectrum analyser by applying a magnetic field gradient to encode RF frequency into spatial position. Finally, we utilise the spectrum analyser to detect free-space-transmitted RF signals matching the strength and frequency of typical Wi-Fi signals. This work exemplifies the unique capabilities of isotropic spins in hBN to operate as RF sensors, while circumventing the challenging requirement of precisely aligned magnetic fields facing conventional solid-state spins. |
| title | Radiofrequency receiver based on isotropic solid-state spins |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2410.00430 |