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Terahertz-Radiometer for AXions (T-RAX)

Speaker
Tao Xu
Date
Fri May 2nd 2025, 3:00 - 5:00pm
Affiliation
University of Oklahoma
Event Sponsor
Stanford Institute for Theoretical Physics
Location
Varian 312

Axions, originally proposed to solve the strong CP problem, are a well-motivated dark matter candidate. While many experiments have searched for axion dark matter across a broad mass range, the meV mass region remains less explored. In this talk, I will introduce the Terahertz-Radiometer for AXions (T-RAX)—a proposed experiment designed to search for meV axion dark matter through its coupling to photons. T-RAX aims to detect surface radiation signals via the Primakoff effect from novel epsilon-near-zero metamaterials operating at THz frequencies. Leveraging recent developments in semiconductor quantum structures, the detector features a compact design and electromagnetically tunable plasma frequencies. I will present the current status of the T-RAX proposal and show simulation results demonstrating its potential to probe previously unconstrained regions of axion dark matter parameter space.