Four- and six-photon stimulated Raman transitions for coherent qubit and qudit operations

• URL: http://arxiv.org/abs/2602.18567v1
• Date: Fri, 20 Feb 2026 19:09:28 GMT
• Title: Four- and six-photon stimulated Raman transitions for coherent qubit and qudit operations
• Authors: Gabriel J. Gregory, Evan R. Ritchie, Alex Quinn, Sean Brudney, David J. Wineland, David T. C. Allcock, Jameson O'Reilly,
• Abstract summary: We experimentally demonstrate transitions between electronic angular momentum states with a difference in magnetic quantum numbers.<n>We discuss pathways to increase the observed multi-photon transition fidelities to $>99.99%$, providing a tool for efficient, high-fidelity control of qutextitdits and single-atom logical qubits.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We experimentally demonstrate transitions between electronic angular momentum states with a difference in magnetic quantum numbers $Δ\mathrm{m_J} = $ 3, 4, and 5 via resonant four- and six-photon stimulated Raman transitions in a single trapped atom. Derivation of the corresponding Rabi frequencies, which are verified experimentally, follows the standard treatment of two-photon transitions including the adiabatic elimination of intermediate states. Finally, we discuss pathways to increase the observed multi-photon transition fidelities to $>99.99\%$, providing a tool for efficient, high-fidelity control of qu\textit{d}its and single-atom logical qubits.

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