Optical Excitation and Trapping of Kr81

J. S. Wang, F. Ritterbusch, X.-Z. Dong, C. Gao, H. Li, W. Jiang, S.-Y. Liu, Z.-T. Lu, W.-H. Wang, G.-M. Yang, Y.-S. Zhang, and Z.-Y. Zhang
Phys. Rev. Lett. 127, 023201 – Published 6 July 2021
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Abstract

We have realized optical excitation, trapping, and detection of the radioisotope Kr81 with an isotopic abundance of 0.9 ppt. The 124 nm light needed for the production of metastable atoms is generated by a resonant discharge lamp. Photon transport through the optically thick krypton gas inside the lamp is simulated and optimized to enhance both brightness and resonance. We achieve a state-of-the-art Kr81 loading rate of 1800atoms/h, which can be further scaled up by adding more lamps. The all-optical approach overcomes the limitations on precision and sample size of radiokrypton dating, enabling new applications in the earth sciences, particularly for dating of polar ice cores.

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  • Received 16 March 2021
  • Accepted 1 June 2021

DOI:https://doi.org/10.1103/PhysRevLett.127.023201

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

J. S. Wang, F. Ritterbusch*, X.-Z. Dong, C. Gao, H. Li, W. Jiang, S.-Y. Liu, Z.-T. Lu, W.-H. Wang, G.-M. Yang, Y.-S. Zhang, and Z.-Y. Zhang

  • Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, China

  • *Corresponding author. florian@ustc.edu.cn
  • Corresponding author. ztlu@ustc.edu.cn

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Issue

Vol. 127, Iss. 2 — 9 July 2021

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