https://doi.org/10.1140/epjp/s13360-023-04326-1
Regular Article
Majorana bound states in a driven quantum dot
1
Dipartamento di Scienza Applicata e Tecnologia, Politecnico di Torino, 10129, Turin, Italy
2
Departamento de Física de Materiales, GISC, Universidad Complutense, 28040, Madrid, Spain
3
Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110 V, Valparaíso, Chile
Received:
6
June
2023
Accepted:
28
July
2023
Published online:
10
August
2023
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.
© The Author(s) 2023
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