Fano-type interference in quantum dots coupled between metallic and superconducting leads

We analyze the quantum interference effects appearing in the charge current through the double quantum dots coupled in T-shape configuration to an isotropic superconductor and metallic lead. Owing to the proximity effect the quantum dots inherit a pairing which has a profound influence on nonequilibrium charge transport, especially in the subgap regime vertical bar V vertical bar < Delta/vertical bar e vertical bar. We discuss under what conditions the Fano-type line shapes might appear in such Andreev conductance and consider a possible interplay with the strong correlation effects.