Simultaneous nonreciprocal and ultra-strong coupling in cavity magnonics
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arXiv
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| Hauptverfasser: | , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866916644693999616 |
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| author | Zhang, Chi Hao, Zhenhui Shi, Yongzhang Jiang, Changjun Li, Xiling Ong, C. K. Gao, Daqiang Chai, Guozhi |
| author_facet | Zhang, Chi Hao, Zhenhui Shi, Yongzhang Jiang, Changjun Li, Xiling Ong, C. K. Gao, Daqiang Chai, Guozhi |
| contents | We demonstrate the simultaneous realization of nonreciprocal coupling and ultra-strong coupling in cavity magnonics. By replacing a copper cylinder with a yttrium iron garnet cylinder within the photonic crystal, we achieve an ultra-strong coupling strength of 1.18 GHz and a coupling efficiency of 10.9%. Nonreciprocal microwave transmission emerges within the photonic bandgap, due to the breaking of time-reversal symmetry through the gyromagnetic and Faraday effects. This work establishes a foundation for advanced nonreciprocal devices in hybrid cavity magnonic systems, with promising applications in quantum information processing and microwave isolation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2304_09627 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Simultaneous nonreciprocal and ultra-strong coupling in cavity magnonics Zhang, Chi Hao, Zhenhui Shi, Yongzhang Jiang, Changjun Li, Xiling Ong, C. K. Gao, Daqiang Chai, Guozhi Applied Physics Quantum Physics We demonstrate the simultaneous realization of nonreciprocal coupling and ultra-strong coupling in cavity magnonics. By replacing a copper cylinder with a yttrium iron garnet cylinder within the photonic crystal, we achieve an ultra-strong coupling strength of 1.18 GHz and a coupling efficiency of 10.9%. Nonreciprocal microwave transmission emerges within the photonic bandgap, due to the breaking of time-reversal symmetry through the gyromagnetic and Faraday effects. This work establishes a foundation for advanced nonreciprocal devices in hybrid cavity magnonic systems, with promising applications in quantum information processing and microwave isolation. |
| title | Simultaneous nonreciprocal and ultra-strong coupling in cavity magnonics |
| topic | Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2304.09627 |