dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/12903 |
|
dc.identifier.uri |
https://doi.org/10.15488/12800 |
|
dc.contributor.author |
Hannig, Stephan
|
eng |
dc.contributor.author |
Pelzer, L.
|
eng |
dc.contributor.author |
Scharnhorst, N.
|
eng |
dc.contributor.author |
Kramer, J.
|
eng |
dc.contributor.author |
Stepanova, M.
|
eng |
dc.contributor.author |
Xu, Z.T.
|
eng |
dc.contributor.author |
Spethmann, N.
|
eng |
dc.contributor.author |
Leroux, I.D.
|
eng |
dc.contributor.author |
Mehlstäubler, Tanja E.
|
eng |
dc.contributor.author |
Schmidt, Piet O.
|
eng |
dc.date.accessioned |
2022-09-26T15:00:29Z |
|
dc.date.available |
2022-09-26T15:00:29Z |
|
dc.date.issued |
2019 |
|
dc.identifier.citation |
Hannig, S.; Pelzer, L.; Scharnhorst, N.; Kramer, J.; Stepanova, M. et al: Towards a transportable aluminium ion quantum logic optical clock. In: Review of Scientific Instruments 90 (2019), Nr. 5, 053204. DOI: https://doi.org/10.1063/1.5090583 |
eng |
dc.description.abstract |
With the advent of optical clocks featuring fractional frequency uncertainties on the order of 10-17 and below, new applications such as chronometric leveling with few-centimeter height resolution emerge. We are developing a transportable optical clock based on a single trapped aluminum ion, which is interrogated via quantum logic spectroscopy. We employ singly charged calcium as the logic ion for sympathetic cooling, state preparation, and readout. Here, we present a simple and compact physics and laser package for manipulation of 40Ca+. Important features are a segmented multilayer trap with separate loading and probing zones, a compact titanium vacuum chamber, a near-diffraction-limited imaging system with high numerical aperture based on a single biaspheric lens, and an all-in-fiber 40Ca+ repump laser system. We present preliminary estimates of the trap-induced frequency shifts on 27Al+, derived from measurements with a single calcium ion. The micromotion-induced second-order Doppler shift for 27Al+ has been determined to be δνEMMν=-0.4-0.3 +0.4×10-18 and the black-body radiation shift is δνBBR/ν = (-4.0 ± 0.4) × 10-18. Moreover, heating rates of 30 (7) quanta per second at trap frequencies of ωrad,Ca+ ≈ 2π × 2.5 MHz (ωax,Ca+ ≈ 2π × 1.5 MHz) in radial (axial) direction have been measured, enabling interrogation times of a few hundreds of milliseconds. |
eng |
dc.language.iso |
eng |
eng |
dc.publisher |
American Institute of Physics : [S.l.] |
|
dc.relation.ispartofseries |
Review of Scientific Instruments 90 (2019), Nr. 5 |
eng |
dc.rights |
CC BY 4.0 Unported |
eng |
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
eng |
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
eng |
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
eng |
dc.subject |
Aluminum |
eng |
dc.subject |
Atomic clocks |
eng |
dc.subject |
Calcium |
eng |
dc.subject |
Ions |
eng |
dc.subject |
Optical variables measurement |
eng |
dc.subject |
Quantum theory |
eng |
dc.subject |
Trapped ions |
eng |
dc.subject.ddc |
530 | Physik
|
eng |
dc.title |
Towards a transportable aluminium ion quantum logic optical clock |
eng |
dc.type |
Article |
eng |
dc.type |
Text |
eng |
dc.relation.essn |
1089-7623 |
|
dc.relation.doi |
https://doi.org/10.1063/1.5090583 |
|
dc.bibliographicCitation.issue |
5 |
|
dc.bibliographicCitation.volume |
90 |
|
dc.description.version |
publishedVersion |
eng |
tib.accessRights |
frei zug�nglich |
eng |
dc.bibliographicCitation.articleNumber |
053204 |
|
dc.bibliographicCitation.articleNumber |
053204 |
|