Measurement of the strontium triplet Rydberg series by depletion spectroscopy of ultracold atoms

Luc Couturier, Ingo Nosske, Fachao Hu, Canzhu Tan, Chang Qiao, Y. H. Jiang, Peng Chen, and Matthias Weidemüller
Phys. Rev. A 99, 022503 – Published 4 February 2019

Abstract

We report on the atom loss spectroscopy of strontium Rydberg atoms in a magnetooptical trap, using a two-photon excitation scheme through the intermediate state 5s5p3P1. Energies of the 5sns3S1 and 5snd3D1,2 Rydberg series of Sr88 in the range 13n50 are determined with an absolute accuracy of 10 MHz, including the perturbed region where the 5snd3D2 series couples to the 5snd1D2 series. This represents an improvement by more than two orders of magnitude compared to previously published data. The quantum defects for each series are determined using the extended Rydberg-Ritz formula in the range where there is no strong perturbation. A value of 1377012721(10)MHz for the first ionization limit of Sr88 is extracted.

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  • Received 1 November 2018

DOI:https://doi.org/10.1103/PhysRevA.99.022503

©2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Luc Couturier1,2, Ingo Nosske1,2, Fachao Hu1,2, Canzhu Tan1,2, Chang Qiao1,2, Y. H. Jiang2,3,*, Peng Chen1,2,†, and Matthias Weidemüller1,2,4,‡

  • 1Shanghai Branch, National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 2CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China
  • 3Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
  • 4Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany

  • *jiangyh@sari.ac.cn
  • peng07@ustc.edu.cn
  • weidemueller@uni-heidelberg.de

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Issue

Vol. 99, Iss. 2 — February 2019

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