• Open Access

Observation of a narrow inner-shell orbital transition in atomic erbium at 1299 nm

A. Patscheider, B. Yang, G. Natale, D. Petter, L. Chomaz, M. J. Mark, G. Hovhannesyan, M. Lepers, and F. Ferlaino
Phys. Rev. Research 3, 033256 – Published 17 September 2021

Abstract

We report on the observation and coherent excitation of atoms on the narrow inner-shell orbital transition, connecting the erbium ground state [Xe]4f12(3H6)6s2 to the excited state [Xe]4f11((4I15/2)0)5d(5D3/2)6s2(15/2,3/2)70. This transition corresponds to a wavelength of 1299 nm and is optically closed. We perform high-resolution spectroscopy to extract the gJ factor of the 1299-nm state and to determine the frequency shift for four bosonic isotopes. We further demonstrate coherent control of the atomic state and extract a lifetime of 178(19) ms, which corresponds to a linewidth of 0.9(1) Hz. The experimental findings are in good agreement with our semi-empirical model. In addition, we present theoretical calculations of the atomic polarizability, revealing several different magic-wavelength conditions. Finally, we make use of the vectorial polarizability and confirm a possible magic wavelength at 532 nm.

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  • Received 4 May 2021
  • Accepted 30 July 2021

DOI:https://doi.org/10.1103/PhysRevResearch.3.033256

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

A. Patscheider1,*, B. Yang1,*, G. Natale1, D. Petter1,†, L. Chomaz1,‡, M. J. Mark1,2, G. Hovhannesyan3, M. Lepers3, and F. Ferlaino1,2,§

  • 1Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
  • 2Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Technikerstraße 21a, 6020 Innsbruck, Austria
  • 3Laboratoire Interdisciplinaire Carnot de Bourgogne, CNRS, Université de Bourgogne Franche-Comté, 21078 Dijon, France

  • *These authors contributed equally to this work.
  • Present address: Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland.
  • Present address: Physikalisches Institut, University of Heidelberg, 69120 Heidelberg, Germany.
  • §Corresponding author: Francesca.Ferlaino@uibk.ac.at

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Vol. 3, Iss. 3 — September - November 2021

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