Quantum transport of electrons through a parallel-coupled triple quantum-dot molecule

Abstract

In this article we study the electronic transport through a triple quantum-dot molecule parallel-coupled to leads under a magnetic field. Analytical expressions are obtained for both the conductance and total density of states for the molecule in equilibrium at zero temperature. As a result of quantum interference of resonances belonging to different channels, this configuration exhibits bound states in the continuum (BICs). We examine the broadenings of the molecular states around the conditions under which BICs occur, finding long-lived states extremely robust under variations of the magnetic flux.

Anomalous Fano Resonance in Double Quantum Dot System Coupled to Superconductor

“…As the interfacial quantum dot (i.e., QD 1 ) is connected to superconducting reservoir, scattering on a side level is accompanied by the local pairing. In metal-hybrid structures interference patterns can be observed in the spectral function and transport characteristics as asymmetric Fano features emerging at energies equal to the energy level of the side dot(s) [16][17][18][19][20][21][22][23] . In the presence of local pairing, two resonant structures emerge simultaneously on both sides of the Fermi level [24][25][26] .…”