  We present non-perturbative solutions for multi-level quantum dot structures
coupled to interacting one-dimensional electrodes out of equilibrium. At a
special correlation strength the Hamiltonian can be mapped to the Kondo problem
which possesses a solvable Toulouse point, where all conductance and noise
properties can be calculated exactly. Special attention is paid to the fully
asymmetric setup when each dot level is coupled to only one of the leads and
the electron transport through the structure is accompanied by photon
absorption (emission). A relation between the optical spectra and the energy
dependent current noise power is established. Experimental implications of the
results, specifically for the Fano factor, the ratchet current, and field
emission via localised states, are discussed. In particular, we predict that
the peak in the ratchet current as function of the irradiation frequency splits
up in two due to correlation effects.
