Details
| Original language | English |
|---|---|
| Article number | 011002 |
| Journal | Physical review applied |
| Volume | 11 |
| Issue number | 1 |
| Publication status | Published - 7 Jan 2019 |
| Externally published | Yes |
Abstract
Trapped-ion optical clocks are capable of achieving systematic fractional frequency uncertainties of 10-18 and possibly below. However, the stability of current ion clocks is fundamentally limited by the weak signal of single-ion interrogation. We present an operational, scalable platform for extending clock spectroscopy to arrays of Coulomb crystals consisting of several tens of ions while allowing systematic shifts as low as 10-19. We observe three-dimensional excess micromotion amplitudes inside a Coulomb crystal with atomic spatial resolution and subnanometer amplitude uncertainties, and show that in ion Coulomb crystals of length 400μm and 2 mm, time-dilation shifts of In+ ions due to micromotion can be close to 1×10-19 and below 10-18, respectively. In previous ion traps, excess micromotion would have dominated the uncertainty budget for spectroscopy of even a few ions. By minimizing its contribution and providing a means to quantify it, we open up a path to precision spectroscopy in many-body ion systems, enabling entanglement-enhanced ion clocks and providing a well-controlled, strongly coupled quantum system.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review applied, Vol. 11, No. 1, 011002, 07.01.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Probing Time Dilation in Coulomb Crystals in a High-Precision Ion Trap
AU - Keller, J.
AU - Kalincev, D.
AU - Burgermeister, T.
AU - Kulosa, A. P.
AU - Didier, A.
AU - Nordmann, T.
AU - Kiethe, J.
AU - Mehlstäubler, T. E.
N1 - Funding information: We thank M. Drewsen for helpful discussions on intensifier gating electronics, N. Beev for developing the circuit, Physikalisch-Technische Bundesanstalt departments 5.3 and 5.5 for collaboration on trap fabrication, and S.A. King for helpful comments on the manuscript. This work was supported by the DFG through Grants No. ME3648/1-1 and SFB 1227 (DQ-mat), project B03.
PY - 2019/1/7
Y1 - 2019/1/7
N2 - Trapped-ion optical clocks are capable of achieving systematic fractional frequency uncertainties of 10-18 and possibly below. However, the stability of current ion clocks is fundamentally limited by the weak signal of single-ion interrogation. We present an operational, scalable platform for extending clock spectroscopy to arrays of Coulomb crystals consisting of several tens of ions while allowing systematic shifts as low as 10-19. We observe three-dimensional excess micromotion amplitudes inside a Coulomb crystal with atomic spatial resolution and subnanometer amplitude uncertainties, and show that in ion Coulomb crystals of length 400μm and 2 mm, time-dilation shifts of In+ ions due to micromotion can be close to 1×10-19 and below 10-18, respectively. In previous ion traps, excess micromotion would have dominated the uncertainty budget for spectroscopy of even a few ions. By minimizing its contribution and providing a means to quantify it, we open up a path to precision spectroscopy in many-body ion systems, enabling entanglement-enhanced ion clocks and providing a well-controlled, strongly coupled quantum system.
AB - Trapped-ion optical clocks are capable of achieving systematic fractional frequency uncertainties of 10-18 and possibly below. However, the stability of current ion clocks is fundamentally limited by the weak signal of single-ion interrogation. We present an operational, scalable platform for extending clock spectroscopy to arrays of Coulomb crystals consisting of several tens of ions while allowing systematic shifts as low as 10-19. We observe three-dimensional excess micromotion amplitudes inside a Coulomb crystal with atomic spatial resolution and subnanometer amplitude uncertainties, and show that in ion Coulomb crystals of length 400μm and 2 mm, time-dilation shifts of In+ ions due to micromotion can be close to 1×10-19 and below 10-18, respectively. In previous ion traps, excess micromotion would have dominated the uncertainty budget for spectroscopy of even a few ions. By minimizing its contribution and providing a means to quantify it, we open up a path to precision spectroscopy in many-body ion systems, enabling entanglement-enhanced ion clocks and providing a well-controlled, strongly coupled quantum system.
UR - http://www.scopus.com/inward/record.url?scp=85059824560&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.11.011002
DO - 10.1103/PhysRevApplied.11.011002
M3 - Article
AN - SCOPUS:85059824560
VL - 11
JO - Physical review applied
JF - Physical review applied
SN - 2331-7019
IS - 1
M1 - 011002
ER -