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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| Accès en ligne: | https://arxiv.org/abs/2403.16780 |
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| _version_ | 1866917786029129728 |
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| author | Mencia, Raymond A. Lin, Wei-Ju Cho, Hyunheung Vavilov, Maxim G. Manucharyan, Vladimir E. |
| author_facet | Mencia, Raymond A. Lin, Wei-Ju Cho, Hyunheung Vavilov, Maxim G. Manucharyan, Vladimir E. |
| contents | We describe a superconducting qubit derived from operating a properly designed fluxonium circuit in a zero magnetic field. The qubit has a frequency of about 4 GHz and an energy relaxation quality factor $Q \approx 0.7\times 10^7$, even though the dielectric loss quality factor of the circuit components is in the low $10^5$ range. The Ramsey coherence time exceeds 100 $μ$s, and the average fidelity of Clifford gates is benchmarked to $\mathcal{F} > 0.999$. These figures are expected to improve with optimized fabrication and measurement procedures. Our work establishes a ready-to-use ``partially protected" superconducting qubit functioning in the frequency range of conventional transmons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_16780 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Integer Fluxonium Qubit Mencia, Raymond A. Lin, Wei-Ju Cho, Hyunheung Vavilov, Maxim G. Manucharyan, Vladimir E. Quantum Physics We describe a superconducting qubit derived from operating a properly designed fluxonium circuit in a zero magnetic field. The qubit has a frequency of about 4 GHz and an energy relaxation quality factor $Q \approx 0.7\times 10^7$, even though the dielectric loss quality factor of the circuit components is in the low $10^5$ range. The Ramsey coherence time exceeds 100 $μ$s, and the average fidelity of Clifford gates is benchmarked to $\mathcal{F} > 0.999$. These figures are expected to improve with optimized fabrication and measurement procedures. Our work establishes a ready-to-use ``partially protected" superconducting qubit functioning in the frequency range of conventional transmons. |
| title | Integer Fluxonium Qubit |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2403.16780 |