Details
| Original language | English |
|---|---|
| Article number | 012050 |
| Number of pages | 7 |
| Journal | Journal of Physics: Conference Series |
| Volume | 2889 |
| Issue number | 1 |
| Publication status | Published - 2024 |
| Event | 9th Symposium on Frequency Standards and Metrology, FSM 2023 - Kingscliff, Australia Duration: 16 Oct 2023 → 20 Oct 2023 |
Abstract
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 172Yb+ ions. In first clock comparisons, we see agreement below 1 × 10-17 with results obtained using a single In+ ion, for which we have evaluated the systematic uncertainty to be 2.5 × 10-18. Operation with four clock ions reduces the instability from 1.6×10-15/t/(1s) to 9.2×10-16/t/(1s). 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/N scaling can be achieved with the addition of a repump laser.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Journal of Physics: Conference Series, Vol. 2889, No. 1, 012050, 2024.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - High-accuracy multi-ion spectroscopy with mixed-species Coulomb crystals
AU - Keller, J.
AU - Hausser, H. N.
AU - Richter, I. M.
AU - Nordmann, T.
AU - Bhatt, N. M.
AU - Kiethe, J.
AU - Liu, H.
AU - Benkler, E.
AU - Lipphardt, B.
AU - Dörscher, S.
AU - Stahl, K.
AU - Klose, J.
AU - Lisdat, C.
AU - Filzinger, M.
AU - Huntemann, N.
AU - Peik, E.
AU - Mehlstäubler, T. E.
N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.
PY - 2024
Y1 - 2024
N2 - 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 172Yb+ ions. In first clock comparisons, we see agreement below 1 × 10-17 with results obtained using a single In+ ion, for which we have evaluated the systematic uncertainty to be 2.5 × 10-18. Operation with four clock ions reduces the instability from 1.6×10-15/t/(1s) to 9.2×10-16/t/(1s). 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/N scaling can be achieved with the addition of a repump laser.
AB - 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 172Yb+ ions. In first clock comparisons, we see agreement below 1 × 10-17 with results obtained using a single In+ ion, for which we have evaluated the systematic uncertainty to be 2.5 × 10-18. Operation with four clock ions reduces the instability from 1.6×10-15/t/(1s) to 9.2×10-16/t/(1s). 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/N scaling can be achieved with the addition of a repump laser.
UR - http://www.scopus.com/inward/record.url?scp=85212290660&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2889/1/012050
DO - 10.1088/1742-6596/2889/1/012050
M3 - Conference article
AN - SCOPUS:85212290660
VL - 2889
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012050
T2 - 9th Symposium on Frequency Standards and Metrology, FSM 2023
Y2 - 16 October 2023 through 20 October 2023
ER -