期刊
EUROPEAN PHYSICAL JOURNAL PLUS
卷 138, 期 8, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1140/epjp/s13360-023-04326-1
关键词
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We investigate periodically driven quantum dots in two different setups - one coupled to a topological superconductor and a normal metal lead, and the other connected to two topological superconductors and side-coupled to a normal metal lead. Using non-equilibrium Green's function techniques and Floquet formalism, we obtain the quasienergy spectra as a function of amplitude, frequency, and superconducting phase difference. Our results show unique electronic responses, such as broken particle-hole symmetry resulting from the non-locality of Majorana bound states. We also calculate time-averaged current and differential conductance to experimentally detect these spectral signatures in the proposed configurations.
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.
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