New direct detection constraints on the axion-photon coupling from LIDA

LIDA is an ultimately squeezed-light-enhanced laser-interferometric detector for axions from the galactic halo, where the axion field induces a rotation of the polarization axis of a strong linearly polarized laser beam in a high-finesse cavity. The first observing run already established LIDA as one of the most sensitive direct axion detectors around axion masses of 2 neV, reaching a competitive sensitivity to the axion-photon coupling of 1.51*10^(-10) GeV^(-1). We provide an update of our second observing run that aims for a broadband probing of axion masses below neV and is designed to advance quantum-enhanced optical metrology by setting new direct detection constraints on the axion-photon coupling.