24–27 Mar 2025
UCLA Physics and Astronomy Building 1-425
US/Pacific timezone

GALILEO: Galactic Axion Laser Interferometer Leveraging Electro-Optics

27 Mar 2025, 13:20
15m
UCLA Physics and Astronomy Building 1-425

UCLA Physics and Astronomy Building 1-425

475 Portola Plaza, Los Angeles, CA 90095 darkmatter@physics.ucla.edu

Speaker

Reza Ebadi

Description

We introduce GALILEO, a novel experimental approach to detect light dark matter candidates through precision optical interferometry. The method exploits the sensitivity of electro-optical materials, whose refractive indices are modulated by a coherently oscillating dark matter field. Using a high-precision resonant Michelson interferometer as the detection mechanism, GALILEO enables the exploration of uncharted parameter space for light dark matter, including dark photons and axion-like particles, across a broad mass range. Notably, the experiment achieves sensitivity to dark matter masses exceeding tens of microelectronvolts—a challenging regime for conventional microwave cavity haloscopes.

Authors

David Kaplan (Johns Hopkins University) Reza Ebadi Prof. Ronald Walsworth (University of Maryland, College Park) Surjeet Rajendran

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