An atom chip interferometer
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915938413051904 |
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| author | Wirtschafter, B. Westbrook, C. I. Dupont-Nivet, M. |
| author_facet | Wirtschafter, B. Westbrook, C. I. Dupont-Nivet, M. |
| contents | We have realized an interferometer using a thermal cloud of magnetically trapped rubidium 87 atoms on a chip. The interferometer resembles a Ramsey interferometer with a state selective spatial splitting of the two internal states as proposed in [M. Ammar, and al., Phys. Rev. A, 91, 053623]. The splitting is effected by microwave fields from two on-chip waveguides while the atoms remain magnetically trapped. The inferred maximum separation is $1.2\pm 0.1~μ$m. We observe interference fringes with a contrast around 8\% limited by velocity difference of the two interferometer states when we close the interferometer. We develop a model describing this contrast decay. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_19859 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | An atom chip interferometer Wirtschafter, B. Westbrook, C. I. Dupont-Nivet, M. Atomic Physics We have realized an interferometer using a thermal cloud of magnetically trapped rubidium 87 atoms on a chip. The interferometer resembles a Ramsey interferometer with a state selective spatial splitting of the two internal states as proposed in [M. Ammar, and al., Phys. Rev. A, 91, 053623]. The splitting is effected by microwave fields from two on-chip waveguides while the atoms remain magnetically trapped. The inferred maximum separation is $1.2\pm 0.1~μ$m. We observe interference fringes with a contrast around 8\% limited by velocity difference of the two interferometer states when we close the interferometer. We develop a model describing this contrast decay. |
| title | An atom chip interferometer |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2512.19859 |