Majorana bound states in a driven quantum dot

Medina-Cuy, Fabian; Martinez, Dunkan; Dominguez-Adame, Francisco; Orellana, P. A.

Abstract

We study a periodically driven quantum dot in two different configurations. In the first setup, a quantum dot coupled to a topological superconductor and a normal metal lead. In the second setup, a T-shape quantum dot connected to two topological superconductors and side coupled to a normal metal lead. By a combination of non-equilibrium Green's function techniques and Floquet's formalism, we obtain the quasienergy spectra as a function of the amplitude, frequency, and superconducting phase difference. We show that the states develop unique electronic responses, such as the broken particle-hole symmetry that appears when considering the non-locality of Majorana bound states. Finally, we compute the time-average current and the differential conductance to reveal these spectra signatures through physically measurable magnitudes in the two proposed configurations.

Más información

Título según WOS: ID WOS:001051760100002 Not found in local WOS DB
Título de la Revista: EUROPEAN PHYSICAL JOURNAL PLUS
Volumen: 138
Número: 8
Editorial: SPRINGER HEIDELBERG
Fecha de publicación: 2023
DOI:

10.1140/epjp/s13360-023-04326-1

Notas: ISI