Volume 507 - 3rd General Meeting of the COST Action COSMIC WISPers (CA21106) - 3rd Training School of the COST Action COSMIC WISPers (CA21106) (COSMICWISPers2025) - WG4 parallel
Prospects for Ultralight Dark Matter Search with Cadmium Atom Interferometers
M. Chiarotti, P.J. Robert, S. Manzoor and N. Poli*
*: corresponding author
Full text: Not available
Abstract
Tabletop experiments searching for ultralight axions and axion-like particles (ALPs) provide a compelling low-energy complement to high-energy collider probes. We investigate a dual-arm atom interferometer based on cadmium atoms driven on ultraviolet transitions, where the higher photon energy enhances sensitivity to ALP-induced phase shifts. Preliminary estimates suggest that the sensitivity could improve by roughly a factor of three near an ALP mass of 10^−20 eV, compared to other atom interferometer proposals based on strontium or ytterbium. We further discuss a specific scheme that employs large-momentum-transfer beam splitters and dual interferometers operated in opposite spin configurations, which may enable the cancellation of
common-mode noise.
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