Photonic crystal cavities based on suspended yttrium iron garnet nanobeams
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866912968913977344 |
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| author | Rashedi, Alireza Ebrahimi, Mehri Huang, Yunhu Rudd, Matt J. Bittencourt, V. A. S. V. Davis, John P. |
| author_facet | Rashedi, Alireza Ebrahimi, Mehri Huang, Yunhu Rudd, Matt J. Bittencourt, V. A. S. V. Davis, John P. |
| contents | We report the fabrication and optical characterization of an air-suspended photonic crystal nanobeam cavity in yttrium-iron-garnet (YIG) realized by focused-ion-beam milling. YIG's combination of low optical loss and ferrimagnetism makes it highly attractive for quantum technologies, yet prior work has largely been focused on millimeter-scale spheres and simple microstructures, hindering true on-chip integration. Demonstrating nanometer-scale patterning in a suspended geometry therefore represents an important advance. Finite-element simulations predict that the same structure supports a flapping-type mechanical mode at $Ω/ 2π\approx 1.52 \,\text{GHz}$ and a backward-volume spin-wave mode at $Ω/ 2π= 11.59 \,\text{GHz}$ under an in-plane bias field. Although we measure only the photonic resonance (intrinsic $Q \sim 2 \times 10^{3}$) in this study, the device lays the groundwork for future exploration of coupled photon-phonon-magnon dynamics once higher optical quality factors are achieved. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_05361 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Photonic crystal cavities based on suspended yttrium iron garnet nanobeams Rashedi, Alireza Ebrahimi, Mehri Huang, Yunhu Rudd, Matt J. Bittencourt, V. A. S. V. Davis, John P. Applied Physics Mesoscale and Nanoscale Physics Instrumentation and Detectors Optics Quantum Physics We report the fabrication and optical characterization of an air-suspended photonic crystal nanobeam cavity in yttrium-iron-garnet (YIG) realized by focused-ion-beam milling. YIG's combination of low optical loss and ferrimagnetism makes it highly attractive for quantum technologies, yet prior work has largely been focused on millimeter-scale spheres and simple microstructures, hindering true on-chip integration. Demonstrating nanometer-scale patterning in a suspended geometry therefore represents an important advance. Finite-element simulations predict that the same structure supports a flapping-type mechanical mode at $Ω/ 2π\approx 1.52 \,\text{GHz}$ and a backward-volume spin-wave mode at $Ω/ 2π= 11.59 \,\text{GHz}$ under an in-plane bias field. Although we measure only the photonic resonance (intrinsic $Q \sim 2 \times 10^{3}$) in this study, the device lays the groundwork for future exploration of coupled photon-phonon-magnon dynamics once higher optical quality factors are achieved. |
| title | Photonic crystal cavities based on suspended yttrium iron garnet nanobeams |
| topic | Applied Physics Mesoscale and Nanoscale Physics Instrumentation and Detectors Optics Quantum Physics |
| url | https://arxiv.org/abs/2412.05361 |