A Dual-species Trapped-ion System for Quantum Information Processing with $^{88}$Sr$^+$ and $^{133}$Ba$^+$.

POSTER

Abstract

Dual-species ion trapping is a potentially useful tool for scalable trapped-ion quantum information processing (QIP), since the second ion species can be used as a sympathetic coolant or as an ancilla qubit. $^{88}$Sr$^+$ and $^{133}$Ba$^+$ both have accessible visible laser wavelengths for cooling, state preparation, detection, and gate operations, making them a promising pair for QIP applications. The mass ratio is also appropriate for sympathetic cooling. Further, $^{133}$Ba$^+$ has a spin-1/2 nucleus so the qubit can be encoded in the ground-state hyperfine manifold, which can have long coherence times [1]. We show progress towards dual-species trapping and control of $^{88}$Sr$^+$ and $^{133}$Ba$^+$. [1] D. Hucol \textit{et al.}., PRL {\bf 119} 100501 (2017).

Authors

  • Susanna Todaro

    • National Institute of Standards and Technology Boulder
    • NIST, University of Colorado Boulder
    • MIT, Department of Physics

  • Jasmine Sinanan-Singh

    • MIT, Department of Physics

  • Jules Stuart

    • MIT, Department of Physics

  • Colin Bruzewicz

    • MIT, Lincoln Labs

  • Gabriel Mintzer

    • MIT, Department of Physics

  • Luke Qi

    • MIT, Department of Physics

  • Roberto Gauna

    • MIT, Department of Physics

  • Isaac Chuang

    • MIT, Department of Physics

  • John Chiaverini

    • MIT, Lincoln Labs

  • Jeremy Sage

    • MIT, Lincoln Labs