Designing potentials with Laguerre-Gaussian modes for systematic effects characterization below 10^−18 level in strontium optical lattice clocks

International audienc

Observation of quantum correlations on the strontium optical lattice clock transition

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Observation of quantum correlations on the strontium optical lattice clock transition

International audienc

Quantum Nondemolition Detection for Strontium Optical Lattice Clock

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Quantum Nondemolition Detection for Strontium Optical Lattice Clock

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Generating LG modes for atom trapping in a Sr optical lattice clock

International audienceAiming to improve the characterization of systematic effects in optical lattice clocks below 10^−18, we propose the implementation of Laguerre-Gaussian modes (LGpl) to shape a multi-site trap in the 1D optical lattice of a Sr optical lattice clock, hence reducing the density of atoms, while preserving the advantages of 1D lattices. In this work, we demonstrate the generation of LG0l modes with l up to 4, and the injection of these modes into an in-vacuum optical cavity intended for the dipole trapping of atoms. Trapping depths up to 39Er for an LG04 were obtained, a priori making it possible to implement LG modes within the clock sequence. We then propose and evaluate two different methods to load atoms in an LG profile