Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Hendrik Bekker
  • Anastasia Borschevsky
  • Zoltán Harman
  • Christoph H. Keitel
  • Thomas Pfeifer
  • Piet Oliver Schmidt
  • José R. Crespo López-Urrutia
  • Julian C. Berengut

Externe Organisationen

  • Max-Planck-Institut für Kernphysik
  • Reichsuniversität Groningen
  • Physikalisch-Technische Bundesanstalt (PTB)
  • University of New South Wales (UNSW)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer5651
FachzeitschriftNature Communications
Jahrgang10
Ausgabenummer1
Frühes Online-Datum11 Dez. 2019
PublikationsstatusElektronisch veröffentlicht (E-Pub) - 11 Dez. 2019

Abstract

Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of physics beyond the Standard Model are those which occur at rare orbital crossings where the shell structure of the periodic table is reordered. There are only three such crossings expected to be accessible in highly charged ions, and hitherto none have been observed as both experiment and theory have proven difficult. In this work we observe an orbital crossing in a system chosen to be tractable from both sides: Pr9 +. We present electron beam ion trap measurements of its spectra, including the inter-configuration lines that reveal the sought-after crossing. With state-of-the-art calculations we show that the proposed nHz-wide clock line has a very high sensitivity to variation of the fine-structure constant, α, and violation of local Lorentz invariance; and has extremely low sensitivity to external perturbations.

ASJC Scopus Sachgebiete

Zitieren

Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+. / Bekker, Hendrik; Borschevsky, Anastasia; Harman, Zoltán et al.
in: Nature Communications, Jahrgang 10, Nr. 1, 5651, 11.12.2019.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Bekker, H, Borschevsky, A, Harman, Z, Keitel, CH, Pfeifer, T, Schmidt, PO, Crespo López-Urrutia, JR & Berengut, JC 2019, 'Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+', Nature Communications, Jg. 10, Nr. 1, 5651. https://doi.org/10.48550/arXiv.1910.09010, https://doi.org/10.1038/s41467-019-13406-9
Bekker, H., Borschevsky, A., Harman, Z., Keitel, C. H., Pfeifer, T., Schmidt, P. O., Crespo López-Urrutia, J. R., & Berengut, J. C. (2019). Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+. Nature Communications, 10(1), Artikel 5651. Vorabveröffentlichung online. https://doi.org/10.48550/arXiv.1910.09010, https://doi.org/10.1038/s41467-019-13406-9
Bekker H, Borschevsky A, Harman Z, Keitel CH, Pfeifer T, Schmidt PO et al. Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+. Nature Communications. 2019 Dez 11;10(1):5651. Epub 2019 Dez 11. doi: 10.48550/arXiv.1910.09010, 10.1038/s41467-019-13406-9
Bekker, Hendrik ; Borschevsky, Anastasia ; Harman, Zoltán et al. / Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+. in: Nature Communications. 2019 ; Jahrgang 10, Nr. 1.
Download
@article{381ef9e1d19749a4be86d31a2dc8129c,
title = "Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+",
abstract = "Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of physics beyond the Standard Model are those which occur at rare orbital crossings where the shell structure of the periodic table is reordered. There are only three such crossings expected to be accessible in highly charged ions, and hitherto none have been observed as both experiment and theory have proven difficult. In this work we observe an orbital crossing in a system chosen to be tractable from both sides: Pr9 +. We present electron beam ion trap measurements of its spectra, including the inter-configuration lines that reveal the sought-after crossing. With state-of-the-art calculations we show that the proposed nHz-wide clock line has a very high sensitivity to variation of the fine-structure constant, α, and violation of local Lorentz invariance; and has extremely low sensitivity to external perturbations.",
author = "Hendrik Bekker and Anastasia Borschevsky and Zolt{\'a}n Harman and Keitel, {Christoph H.} and Thomas Pfeifer and Schmidt, {Piet Oliver} and {Crespo L{\'o}pez-Urrutia}, {Jos{\'e} R.} and Berengut, {Julian C.}",
note = "Funding information: This work is part of and supported by the DFG Collaborative Research Centre SFB 1225 (ISOQUANT). J.C.B. was supported in this work by the Alexander von Humboldt Foundation and the Australian Research Council (DP190100974). A.B. would like to thank the Center for Information Technology of the University of Groningen for providing access to the Peregrine high performance computing cluster and for their technical support. A.B. is grateful for the support of the UNSW Gordon Godfrey fellowship. P.O.S. acknowledges support from DFG, project SCHM2678/5-1, through SFB 1227 (DQ-mat), project B05, and the Cluster of Excellence EXC 2123 (QuantumFrontiers). We acknowledge funding through the Max Planck-RIKEN-PTB Center for Time, Constants and Fundamental Symmetries (TCFS).",
year = "2019",
month = dec,
day = "11",
doi = "10.48550/arXiv.1910.09010",
language = "English",
volume = "10",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

Download

TY - JOUR

T1 - Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9+

AU - Bekker, Hendrik

AU - Borschevsky, Anastasia

AU - Harman, Zoltán

AU - Keitel, Christoph H.

AU - Pfeifer, Thomas

AU - Schmidt, Piet Oliver

AU - Crespo López-Urrutia, José R.

AU - Berengut, Julian C.

N1 - Funding information: This work is part of and supported by the DFG Collaborative Research Centre SFB 1225 (ISOQUANT). J.C.B. was supported in this work by the Alexander von Humboldt Foundation and the Australian Research Council (DP190100974). A.B. would like to thank the Center for Information Technology of the University of Groningen for providing access to the Peregrine high performance computing cluster and for their technical support. A.B. is grateful for the support of the UNSW Gordon Godfrey fellowship. P.O.S. acknowledges support from DFG, project SCHM2678/5-1, through SFB 1227 (DQ-mat), project B05, and the Cluster of Excellence EXC 2123 (QuantumFrontiers). We acknowledge funding through the Max Planck-RIKEN-PTB Center for Time, Constants and Fundamental Symmetries (TCFS).

PY - 2019/12/11

Y1 - 2019/12/11

N2 - Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of physics beyond the Standard Model are those which occur at rare orbital crossings where the shell structure of the periodic table is reordered. There are only three such crossings expected to be accessible in highly charged ions, and hitherto none have been observed as both experiment and theory have proven difficult. In this work we observe an orbital crossing in a system chosen to be tractable from both sides: Pr9 +. We present electron beam ion trap measurements of its spectra, including the inter-configuration lines that reveal the sought-after crossing. With state-of-the-art calculations we show that the proposed nHz-wide clock line has a very high sensitivity to variation of the fine-structure constant, α, and violation of local Lorentz invariance; and has extremely low sensitivity to external perturbations.

AB - Recent theoretical works have proposed atomic clocks based on narrow optical transitions in highly charged ions. The most interesting candidates for searches of physics beyond the Standard Model are those which occur at rare orbital crossings where the shell structure of the periodic table is reordered. There are only three such crossings expected to be accessible in highly charged ions, and hitherto none have been observed as both experiment and theory have proven difficult. In this work we observe an orbital crossing in a system chosen to be tractable from both sides: Pr9 +. We present electron beam ion trap measurements of its spectra, including the inter-configuration lines that reveal the sought-after crossing. With state-of-the-art calculations we show that the proposed nHz-wide clock line has a very high sensitivity to variation of the fine-structure constant, α, and violation of local Lorentz invariance; and has extremely low sensitivity to external perturbations.

UR - http://www.scopus.com/inward/record.url?scp=85076378780&partnerID=8YFLogxK

U2 - 10.48550/arXiv.1910.09010

DO - 10.48550/arXiv.1910.09010

M3 - Article

C2 - 31827086

AN - SCOPUS:85076378780

VL - 10

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 5651

ER -

Von denselben Autoren