Expanding the Quantum Computing Toolbox using 2Fo7/2 in Yb+

ORAL

Abstract

The long lifetime of the low-lying metastable 2Fo7/2 manifold in Yb+ allows for the definition of an effectively-stable metastable (``m-type'') qubit for gates and storage, while the ground-state (``g-type'') qubit defined in the 2S1/2 manifold can be utilized for refrigeration, state-preparation and readout [1]. The g-type qubit in 173Yb+ is predicted to have the lowest state preparation infidelity of the high spin ions [2], and the 2Fo7/2 manifold in 173Yb+ contains 6 simultaneous zero-field hyperfine clock states that can host qubits and qudits. We present methods for operating the m-type qubit in Yb+, performing state preparation and measurement of the g-type and m-type qubits hosted on the ground state and metastable 2Fo7/2 states respectively, and present spectroscopic characterization of the metastable state.

[1] D. T. C. Allcock, Et al., Appl. Phys. Lett. 119, 214002 (2021)

[2] Fangzhao Alex An., Et al., Phys. Rev. Lett. 129, 130501 (2022).

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Presenters

  • Hassan A Farhat

    UCLA, University of California, Los Angeles (UCLA)

Authors

  • Hassan A Farhat

    UCLA, University of California, Los Angeles (UCLA)

  • William G Liu

    UCLA, University of California, Los Angeles (UCLA)

  • Patrick J McMillin

    University of California, Los Angeles

  • Wesley C Campbell

    UCLA, University of California, Los Angeles, University of California Los Angeles, University of California, Los Angeles (UCLA)