Performance Analysis of Superconductor-constriction-Superconductor Transmon Qubits
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866916279731879936 |
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| author | Liu, Mingzhao Black, Charles T. |
| author_facet | Liu, Mingzhao Black, Charles T. |
| contents | This work presents a computational analysis of a superconducting transmon qubit design, in which the superconductor-insulator-superconductor (SIS) Josephson junction is replaced by a co-planar, superconductor-constriction-superconductor (ScS) nanobridge junction. Within the scope of Ginzburg-Landau theory, we find that the nanobridge ScS transmon has an improved charge dispersion compared to the SIS transmon, with a tradeoff of smaller anharmonicity. These calculations provide a framework for estimating the superconductor material properties and junction dimensions compatible with gigahertz frequency ScS transmon operation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_04276 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Performance Analysis of Superconductor-constriction-Superconductor Transmon Qubits Liu, Mingzhao Black, Charles T. Superconductivity Mesoscale and Nanoscale Physics Quantum Physics This work presents a computational analysis of a superconducting transmon qubit design, in which the superconductor-insulator-superconductor (SIS) Josephson junction is replaced by a co-planar, superconductor-constriction-superconductor (ScS) nanobridge junction. Within the scope of Ginzburg-Landau theory, we find that the nanobridge ScS transmon has an improved charge dispersion compared to the SIS transmon, with a tradeoff of smaller anharmonicity. These calculations provide a framework for estimating the superconductor material properties and junction dimensions compatible with gigahertz frequency ScS transmon operation. |
| title | Performance Analysis of Superconductor-constriction-Superconductor Transmon Qubits |
| topic | Superconductivity Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2301.04276 |