Robust and Determinisitc Preparation of Bosonic Logical States in a Trapped Ion

ORAL

Abstract

We demonstrate a robust, high-fidelity, and measurement-free optimal quantum control protocol to prepare arbitrary bosonic states in the mechanical motion of a trapped ion. Our protocol's versatility enables the preparation of several bosonic logical code words relevant to scaling error-corrected quantum information processing (QIP). We demonstrate the robust preparation of a binomial logical state with up to 4.8X error suppression, the creation of a Gottesman-Kitaev-Preskill code word with a logical fidelity of 0.940(8), a distance-3 binomial state with an average fidelity of 0.807(7), and a squeezed vacuum state with 12.91(5) dB of squeezing. The optimal control protocol can enact unitary gates and can be generalized to multiple bosonic modes, opening new opportunities to implement a large variety of error-robust operations for continuous variable QIP.

*The U.S. Office of Naval Research Global, the U.S. Army Research Office Laboratory for Physical Sciences, the U.S. Air Force Office of Scientific Research, the U.S. Intelligence Advanced Research Projects Activity, Lockheed Martin, Sydney Quantum Academy, and the Australian Research Council.

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Publication: Preprint [arXiv:2310.15546] - Robust and Determinisitc Preparation of Bosonic Logical States in a Trapped Ion

Presenters

  • Vassili G Matsos

    • University of Sydney

Authors

  • Vassili G Matsos

    • University of Sydney

  • Christophe H Valahu

    • University of Sydney

  • Tomas Navickas

    • University of Sydney

  • Maverick J Millican

    • University of Sydney

  • Michael Biercuk

    • Q-CTRL

  • Ting Rei Tan

    • University of Sydney