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Atom Interferometry with Transverse Optical Modes

arXiv Physics Friday 05 June 2026, 02:47 UTC By Ryan Husband, Ryan J. Thomas, Yosri Ben-A\"icha, Rhys H. Eagle, Jessica Eastman, John E. Debs, Patrick J. Everitt, Michael Larsen, Eric Imhof, Charles A. Sackett, John D. Close, Simon A. Haine, Samuel Legge 1 min read
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arXiv:2606.04430v2 Announce Type: new Abstract: We experimentally demonstrate atom interferometry using the transverse phase profile of an optical mode. As proof-of-principle, we use the helical phase windings of Hypergeometric Gaussian beams for Ramsey interferometry with ensembles of ballistically-expanding cold Rb87 atoms, and we show that the interferometer can measure rotations induced by a motor with a sensitivity that scales linearly with orbital angular momentum and interferometer...

arXiv:2606.04430v2 Announce Type: new Abstract: We experimentally demonstrate atom interferometry using the transverse phase profile of an optical mode. As proof-of-principle, we use the helical phase windings of Hypergeometric Gaussian beams for Ramsey interferometry with ensembles of ballistically-expanding cold Rb87 atoms, and we show that the interferometer can measure rotations induced by a motor with a sensitivity that scales linearly with orbital angular momentum and interferometer time. We characterize the thermal decoherence of the interferometer, deriving and experimentally confirming a closed-form expression for the spatially-varying interferometer visibility arising near the singularity of the helical phase winding, motivating the use of condensed atoms in ring-shaped traps.
Atom Interferometry (ORG) Hypergeometric Gaussian (PERSON) Ramsey (PERSON)
Originally published by arXiv Physics Read original →

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