Modelling Realistic Multi-layer devices for superconducting quantum electronic circuits
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866908808547139584 |
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| author | Colletta, Giuseppe Johny, Susan Collins, Jonathan A. Casaburi, Alessandro Weides, Martin |
| author_facet | Colletta, Giuseppe Johny, Susan Collins, Jonathan A. Casaburi, Alessandro Weides, Martin |
| contents | In this work, we present a numerical model specifically designed for 3D multilayer devices, with a focus on nanobridge junctions and coplanar waveguides. Unlike existing numerical models, ours does not approximate the physical layout or limit the number of constituent materials, providing a more accurate and flexible design tool. We calculate critical currents, current phase relationships, and the energy gap where relevant. We validate our model by comparing it with published data. Through our analysis, we found that using multilayer films significantly enhances control over these quantities. For nanobridge junctions in particular, multilayer structures improve qubit anharmonicity compared to monolayer junctions, offering a substantial advantage for qubit performance. For coated multilayer microwave circuits it allows for better studies of the proximity effect, including their effective kinetic inductance. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_02178 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Modelling Realistic Multi-layer devices for superconducting quantum electronic circuits Colletta, Giuseppe Johny, Susan Collins, Jonathan A. Casaburi, Alessandro Weides, Martin Quantum Physics Superconductivity In this work, we present a numerical model specifically designed for 3D multilayer devices, with a focus on nanobridge junctions and coplanar waveguides. Unlike existing numerical models, ours does not approximate the physical layout or limit the number of constituent materials, providing a more accurate and flexible design tool. We calculate critical currents, current phase relationships, and the energy gap where relevant. We validate our model by comparing it with published data. Through our analysis, we found that using multilayer films significantly enhances control over these quantities. For nanobridge junctions in particular, multilayer structures improve qubit anharmonicity compared to monolayer junctions, offering a substantial advantage for qubit performance. For coated multilayer microwave circuits it allows for better studies of the proximity effect, including their effective kinetic inductance. |
| title | Modelling Realistic Multi-layer devices for superconducting quantum electronic circuits |
| topic | Quantum Physics Superconductivity |
| url | https://arxiv.org/abs/2411.02178 |