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Fano‐Andreev and Fano‐Majorana Correspondence in Quantum Dot Hybrid Structures
Author(s) -
Calle Ana M.,
Pacheco Mónica,
Orellana Pedro A.,
Otálora Jorge A.
Publication year - 2020
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201900409
Subject(s) - fano plane , fano resonance , physics , majorana , quantum dot , superconductivity , condensed matter physics , topology (electrical circuits) , fano factor , quantum mechanics , plasmon , mathematics , combinatorics , shot noise , detector , pure mathematics , optics
A correspondence on the single‐electron transport properties between systems of different nature, a topological quantum system and a (conventional) non‐topological one, is demonstrated. Specifically, the equivalence between the Fano resonances obtained in T‐shaped double quantum dot system coupled to a superconducting lead (QD–QD–S) and a topological superconductor ring nanowire (QD–MBSs) is presented. The non‐zero value of the Fano (anti)resonance in the conductance of the QD‐MBSs systems is shown as a consequence of a complex Fano factor q M , which is equivalent to the complex Fano factor q S of the QD–QD–S. The complex nature of q S is understood as a sign of a phase introduced by the superconducting lead in the QD–QD–S. It is because of this phase that the correspondence between the QD–QD–S and the QD–MBSs is possible. It is believed that these results can help to reveal the importance of the Fano interference process toward the understanding of the role of the superconductor lead in the QD–QD–S system as well as giving a clear signature of the presence of MBS's in the topological system.