Dispersion Engineering of Planar Sub-millimeter Wave Waveguides and Resonators with Low Radiation Loss
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908695463460864 |
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| author | Sahbaz, Furkan Bogdanov, Simeon I. |
| author_facet | Sahbaz, Furkan Bogdanov, Simeon I. |
| contents | Mm-wave and THz superconducting circuits find numerous applications in areas ranging from quantum information and sensing to high-energy physics. Planar THz transmission lines and resonators are fabrication-friendly, compact, and scalable, and they can be efficiently interfaced with external signals and controls. However, planar circuits radiate strongly at high frequencies, which precludes their use in loss-sensitive applications. Here, we present the design and characterization of planar dispersion-engineered transmission lines that effectively suppress radiation leakage in desired mm-wave bands. We extend this concept to design planar resonators with extremely low radiation leakage, resulting in radiation Q-factors above 106 at 553 GHz. Low-loss planar THz circuitry will impact many application domains, including broadband communications, quantum information, radio astronomy, and cosmology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_06199 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dispersion Engineering of Planar Sub-millimeter Wave Waveguides and Resonators with Low Radiation Loss Sahbaz, Furkan Bogdanov, Simeon I. Optics Applied Physics Quantum Physics Mm-wave and THz superconducting circuits find numerous applications in areas ranging from quantum information and sensing to high-energy physics. Planar THz transmission lines and resonators are fabrication-friendly, compact, and scalable, and they can be efficiently interfaced with external signals and controls. However, planar circuits radiate strongly at high frequencies, which precludes their use in loss-sensitive applications. Here, we present the design and characterization of planar dispersion-engineered transmission lines that effectively suppress radiation leakage in desired mm-wave bands. We extend this concept to design planar resonators with extremely low radiation leakage, resulting in radiation Q-factors above 106 at 553 GHz. Low-loss planar THz circuitry will impact many application domains, including broadband communications, quantum information, radio astronomy, and cosmology. |
| title | Dispersion Engineering of Planar Sub-millimeter Wave Waveguides and Resonators with Low Radiation Loss |
| topic | Optics Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2512.06199 |