2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/106670We investigate coherent backscattering of light by two harmonically trapped atoms in the light of quantitative quantum duality. Including recoil and Doppler shift close to an optical resonance, we calculate the interference visibility as well as the amount of which-path information, both for zero and finite temperature.published version with minor changes and an added figureQuantum Physicstext