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Spectroscopy of a Synthetic Trapped Ion Qubit

David Hucul, Justin E. Christensen, Eric R. Hudson, and Wesley C. Campbell
Phys. Rev. Lett. 119, 100501 – Published 6 September 2017
Physics logo See Synopsis: Radioactive Qubits

Abstract

Ba133+ has been identified as an attractive ion for quantum information processing due to the unique combination of its spin-1/2 nucleus and visible wavelength electronic transitions. Using a microgram source of radioactive material, we trap and laser cool the synthetic A=133 radioisotope of barium II in a radio-frequency ion trap. Using the same, single trapped atom, we measure the isotope shifts and hyperfine structure of the 62P1/262S1/2 and 62P1/252D3/2 electronic transitions that are needed for laser cooling, state preparation, and state detection of the clock-state hyperfine and optical qubits. We also report the 62P1/252D3/2 electronic transition isotope shift for the rare A=130 and 132 barium nuclides, completing the spectroscopic characterization necessary for laser cooling all long-lived barium II isotopes.

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  • Received 16 June 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.100501

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Synopsis

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Radioactive Qubits

Published 6 September 2017

The trapping and cooling of the radioactive isotope barium-133 offers up an attractive system for encoding quantum information.

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Authors & Affiliations

David Hucul, Justin E. Christensen, Eric R. Hudson, and Wesley C. Campbell

  • Department of Physics and Astronomy, University of California—Los Angeles, Los Angeles, California 90095, USA

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Issue

Vol. 119, Iss. 10 — 8 September 2017

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