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Dipole-Dipole Frequency Shifts in Multilevel Atoms



Andre Cidrim, Asier Pineiro Orioli, Christian Sanner, Ross B. Hutson, Jun Ye, Romain Bachelard, Ana Maria Rey


Dipole-dipole interactions lead to frequency shifts which are expected to limit the performance of next generation atomic clocks. In this work, we compute dipolar frequency shifts accounting for the intrinsic atomic multilevel structure in standard Ramsey spectroscopy. When interrogating the transitions featuring the smallest Clebsch-Gordan coefficients, we nd that a simplifi ed two-level treatment becomes inappropriate, even in the presence of strong magnetic fields. For these cases, we show a net suppression of dipolar frequency shifts and the emergence of dominant non-classical effects for specifi c experimentally relevant system sizes, array geometries, and laser wave vector parameters. Our findings are pertinent to current generations of optical lattice and optical tweezer clocks, opening a way to increase even more their current precision and accuracy, and thus their potential to probe fundamental and many-body physics.
Physical Review Letters


atomic clocks, dipolar interactions, frequency shifts, multilevel structure


Cidrim, A. , Pineiro Orioli, A. , Sanner, C. , Hutson, R. , Ye, J. , Bachelard, R. and Rey, A. (2021), Dipole-Dipole Frequency Shifts in Multilevel Atoms, Physical Review Letters, [online],, (Accessed July 18, 2024)


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Created June 30, 2021, Updated November 29, 2022