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Teixeira RC, Larrouy A, Muni A, et al. Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium. Phys Rev Lett. 2020;125(26):263001doi: 10.1103/PhysRevLett.125.263001.
Teixeira, R. C., Larrouy, A., Muni, A., Lachaud, L., Raimond, J. M., Gleyzes, S., & Brune, M. (2020). Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium. Physical review letters, 125(26), 263001. https://doi.org/10.1103/PhysRevLett.125.263001
Teixeira, R C, et al. "Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium." Physical review letters vol. 125,26 (2020): 263001. doi: https://doi.org/10.1103/PhysRevLett.125.263001
Teixeira RC, Larrouy A, Muni A, Lachaud L, Raimond JM, Gleyzes S, Brune M. Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium. Phys Rev Lett. 2020 Dec 31;125(26):263001. doi: 10.1103/PhysRevLett.125.263001. PMID: 33449789.
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Phys Rev Lett. 2020 Dec 31;125(26):263001. doi: 10.1103/PhysRevLett.125.263001.

Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium.

Physical review letters

R C Teixeira, A Larrouy, A Muni, L Lachaud, J-M Raimond, S Gleyzes, M Brune

Affiliations

  1. Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-Université PSL, Sorbonne Université, 11, place Marcelin Berthelot, 75005 Paris, France.
  2. Departamento de Física, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235-SP-310, 13565-905 São Carlos, São Paulo, Brazil.

PMID: 33449789 DOI: 10.1103/PhysRevLett.125.263001

Abstract

Alkaline earth Rydberg atoms are very promising tools for quantum technologies. Their highly excited outer electron provides them with the remarkable properties of Rydberg atoms and, notably, with a huge coupling to external fields or to other Rydberg atoms while the ionic core retains an optically active electron. However, low angular-momentum Rydberg states suffer almost immediate autoionization when the core is excited. Here, we demonstrate that strontium circular Rydberg atoms with a core excited in a 4D metastable level are impervious to autoionization over more than a few millisecond time scale. This makes it possible to trap and laser-cool Rydberg atoms. Moreover, we observe singlet to triplet transitions due to the core optical manipulations, opening the way to a microwave to optical quantum interface.

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