Decoherence effect on the Fano lineshapes in double quantum dots coupled between normal and superconducting leads

Abstract

We investigate the Fano-type spectroscopic lineshapes of the T-shape double quantum dot coupled between the conducting and superconducting electrodes and analyze their stability on a decoherence. Because of the proximity effect the quantum interference patterns appear simultaneously at +/- epsilon_2, where epsilon_2 is an energy of the side-attached quantum dot. We find that decoherence gradually suppresses both such interferometric structures. We also show that at low temperatures another tiny Fano-type structure can be induced upon forming the Kondo state on the side-coupled quantum dot due to its coupling to the floating lead.

8 pages, 7 figures

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Cited by in corpus (11)

• Spin-resolved interference due to Majorana state on interface between normal and superconducting leads
• Fano effect and Andreev bound states in T-shape double quantum dots
• Kondo physics in double quantum dot based Cooper pair splitters
• Fano-Andreev effect in T-shape double-quantum-dot in the Kondo regime
• Anomalous Fano Resonance in Double Quantum Dot System Coupled to Superconductor
• Replicas of the Fano resonances induced by phonons in a subgap Andreev tunneling
• Well-defined Fano effect in the Andreev reflection process of a parallel double-quantum-dot structure
• Interplay of the Kondo effect with the induced pairing in electronic and caloric properties of T-shaped double quantum dots
• Weyl point immersed in a continuous spectrum: an example from superconducting nanostructures
• Transport properties of proximitized double quantum dots
• Quench dynamics of Fano-like resonances in the presence of the on-dot superconducting pairing