State-dependent control of the motional modes of trapped ions using an integrated optical lattice

• URL: http://arxiv.org/abs/2411.03301v1
• Date: Tue, 05 Nov 2024 17:55:35 GMT
• Title: State-dependent control of the motional modes of trapped ions using an integrated optical lattice
• Authors: Alfredo Ricci Vasquez, Carmelo Mordini, Daniel Kienzler, Jonathan Home,
• Abstract summary: We use a single ion to map the optical potential landscape over many periods of the standing-wave field. We observe a state-dependent trap-frequency shift of $2pitimes 3.33(4)$ kHz, corresponding to a bare optical potential of $2pitimes 76.8(5)$ kHz for the electronic ground state.
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• Abstract: In this work we study the interaction of trapped ions with a state-dependent, high-intensity optical lattice formed above an ion trap chip using integrated photonics. We use a single ion to map the optical potential landscape over many periods of the standing-wave field. For a single ion sitting in the centre of the lattice we observe a state-dependent trap-frequency shift of $2\pi\times 3.33(4)$ kHz, corresponding to a bare optical potential of $2\pi\times 76.8(5)$ kHz for the electronic ground state. We extend this to two ions, measuring state-dependent shifts of both axial modes. Additionally, using the internal-state dependence of the interaction, we perform a direct measurement of the energy distribution of the motion of a single ion using carrier spectroscopy. Improvements to the setup would allow to increase the state-dependent curvature by more than 50 times, providing a tool which can be utilised for motional state control, and multi-ion gates using optical potentials produced in a scalable fashion.

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