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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.15144 |
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| _version_ | 1866913361091887104 |
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| author | Zhang, Bo Han, Yuchen Wu, Hong-Liang Wu, Hao Yang, Shuo Oxborrow, Mark Zhao, Qing Fu, Yue Li, Weibin Wang, Yeliang Zheng, Dezhi Zhang, Jun |
| author_facet | Zhang, Bo Han, Yuchen Wu, Hong-Liang Wu, Hao Yang, Shuo Oxborrow, Mark Zhao, Qing Fu, Yue Li, Weibin Wang, Yeliang Zheng, Dezhi Zhang, Jun |
| contents | High-accuracy microwave sensing is widely demanded in various fields, ranging from cosmology to microwave quantum technology. Quantum receivers based on inorganic solid-state spin systems are promising candidates for such purpose because of the stability and compatibility, but their best sensitivity is currently limited to a few pT/$\sqrt{\rm{Hz}}$. Here, by utilising an enhanced readout scheme with the state-of-the-art solid-state maser technology, we develop a robust microwave quantum receiver functioned by organic molecular spins at ambient conditions. Owing to the maser amplification, the sensitivity of the receiver achieves 6.14 $\pm$ 0.17 fT/$\sqrt{\rm{Hz}}$ which exceeds three orders of magnitude than that of the inorganic solid-state quantum receivers. The heterodyne detection without additional local oscillators improves bandwidth of the receiver and allows frequency detection. The scheme can be extended to other solid-state spin systems without complicated control pulses and thus enables practical applications such as electron spin resonance spectroscopy, dark matter searches, and astronomical observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_15144 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultra-sensitive solid-state organic molecular microwave quantum receiver Zhang, Bo Han, Yuchen Wu, Hong-Liang Wu, Hao Yang, Shuo Oxborrow, Mark Zhao, Qing Fu, Yue Li, Weibin Wang, Yeliang Zheng, Dezhi Zhang, Jun Quantum Physics Materials Science High-accuracy microwave sensing is widely demanded in various fields, ranging from cosmology to microwave quantum technology. Quantum receivers based on inorganic solid-state spin systems are promising candidates for such purpose because of the stability and compatibility, but their best sensitivity is currently limited to a few pT/$\sqrt{\rm{Hz}}$. Here, by utilising an enhanced readout scheme with the state-of-the-art solid-state maser technology, we develop a robust microwave quantum receiver functioned by organic molecular spins at ambient conditions. Owing to the maser amplification, the sensitivity of the receiver achieves 6.14 $\pm$ 0.17 fT/$\sqrt{\rm{Hz}}$ which exceeds three orders of magnitude than that of the inorganic solid-state quantum receivers. The heterodyne detection without additional local oscillators improves bandwidth of the receiver and allows frequency detection. The scheme can be extended to other solid-state spin systems without complicated control pulses and thus enables practical applications such as electron spin resonance spectroscopy, dark matter searches, and astronomical observations. |
| title | Ultra-sensitive solid-state organic molecular microwave quantum receiver |
| topic | Quantum Physics Materials Science |
| url | https://arxiv.org/abs/2405.15144 |