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arXiv · 2310.15546

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

V. G. Matsos·C. H. Valahu·T. Navickas·A. D. Rao·M. J. Millican·X. C. Kolesnikow·M. J. Biercuk·T. R. Tan
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Abstract

Encoding logical qubits in bosonic modes provides a potentially hardware-efficient implementation of fault-tolerant quantum information processing. Here, we demonstrate high-fidelity and deterministic preparation of highly non-classical bosonic states in the mechanical motion of a trapped ion. Our approach implements error-suppressing pulses through optimized dynamical modulation of laser-driven spin-motion interactions to generate the target state in a single step. We demonstrate logical fidelities for the Gottesman-Kitaev-Preskill (GKP) state as high as $\bar{\mathcal{F}}=0.940(8)$, a distance-3 binomial state with an average fidelity of $\mathcal{F}=0.807(7)$, and a 12.91(5) dB squeezed vacuum state.

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V. G. Matsos, C. H. Valahu, T. Navickas, A. D. Rao, M. J. Millican, X. C. Kolesnikow, M. J. Biercuk, T. R. Tan. 2023-10-24. Robust and Deterministic Preparation of Bosonic Logical States in a Trapped Ion. https://doi.org/10.1103/physrevlett.133.050602

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