Improving the Fidelity of Single Qubit Primitives in 133Ba+

Poster

Abstract

Recent advances in the loading efficiency, via auto-ioninizing resonances, has highlighted the potential of 133Ba+ as an easy to use qubit, addressing a major impediment faced by early researchers. Here, we report on recent progress in enhancing the fidelity of qubit state preparation and measurement in this species. By augmenting optical-pumping electron shelving with unitary transfer of one qubit state to a metastable 2D5/2  manifold, we are able to isolate the qubit states during preparation and readout, substantially reducing leakage and off-resonant scatter during optical pumping.

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Presenters

  • Steven Diaz

    • University of California, Los Angeles

Authors

  • Steven Diaz

    • University of California, Los Angeles

  • Jiaxiang Wang

    • Yale University

  • Zachary Wall

    • University of California, Los Angeles

  • Elijah Mossman

    • Center for Quantum Science and Engineering (UCLA)

  • Michael Bareian

  • Wesley Campbell

  • Eric Hudson

    • University of California, Los Angeles