High-accuracy multi-ion spectroscopy with mixed-species Coulomb crystals
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866929678568128512 |
|---|---|
| author | Keller, J. Hausser, H. N. Richter, I. M. Nordmann, T. Bhatt, N. M. Kiethe, J. Liu, H. Benkler, E. Lipphardt, B. Dörscher, S. Stahl, K. Klose, J. Lisdat, C. Filzinger, M. Huntemann, N. Peik, E. Mehlstäubler, T. E. |
| author_facet | Keller, J. Hausser, H. N. Richter, I. M. Nordmann, T. Bhatt, N. M. Kiethe, J. Liu, H. Benkler, E. Lipphardt, B. Dörscher, S. Stahl, K. Klose, J. Lisdat, C. Filzinger, M. Huntemann, N. Peik, E. Mehlstäubler, T. E. |
| contents | Multi-ion optical clocks offer the possibility of overcoming the low signal-to-noise ratio of single-ion clocks, while still providing low systematic uncertainties. We present simultaneous spectroscopy of up to four ${}^{115}$In${}^+$ clock ions in a linear Coulomb crystal, sympathetically cooled with ${}^{172}$Yb${}^+$ ions. In first clock comparisons, we see agreement below $1\times10^{-17}$ with results obtained using a single In${}^+$ ion, for which we have evaluated the systematic uncertainty to be $2.5\times10^{-18}$. Operation with four clock ions reduces the instability from $1.6\times10^{-15}/\sqrt{t/(1\;\mathrm{s})}$ to $9.2\times10^{-16}/\sqrt{t/(1\;\mathrm{s})}$. We derive a model for decay-related dead time during state preparation, which matches the observed scaling of instability with clock ion number $N$, and indicates that $1/\sqrt{N}$ scaling can be achieved with the addition of a repump laser. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_09615 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-accuracy multi-ion spectroscopy with mixed-species Coulomb crystals Keller, J. Hausser, H. N. Richter, I. M. Nordmann, T. Bhatt, N. M. Kiethe, J. Liu, H. Benkler, E. Lipphardt, B. Dörscher, S. Stahl, K. Klose, J. Lisdat, C. Filzinger, M. Huntemann, N. Peik, E. Mehlstäubler, T. E. Atomic Physics Quantum Physics Multi-ion optical clocks offer the possibility of overcoming the low signal-to-noise ratio of single-ion clocks, while still providing low systematic uncertainties. We present simultaneous spectroscopy of up to four ${}^{115}$In${}^+$ clock ions in a linear Coulomb crystal, sympathetically cooled with ${}^{172}$Yb${}^+$ ions. In first clock comparisons, we see agreement below $1\times10^{-17}$ with results obtained using a single In${}^+$ ion, for which we have evaluated the systematic uncertainty to be $2.5\times10^{-18}$. Operation with four clock ions reduces the instability from $1.6\times10^{-15}/\sqrt{t/(1\;\mathrm{s})}$ to $9.2\times10^{-16}/\sqrt{t/(1\;\mathrm{s})}$. We derive a model for decay-related dead time during state preparation, which matches the observed scaling of instability with clock ion number $N$, and indicates that $1/\sqrt{N}$ scaling can be achieved with the addition of a repump laser. |
| title | High-accuracy multi-ion spectroscopy with mixed-species Coulomb crystals |
| topic | Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2501.09615 |