Abstract
We have investigated the differential conductance and shot noise for the system of superconducting nanowires irradiated with a periodic electric field by nonequilibrium Green's functions. The numerical results show that the coupling between the Majorana bound states (MBSs) can be tuned by the periodic electric field. The width of barriers has huge influence on the coupling of MBSs, however, the separation between barriers affect the coupling faintly. The coupling increases with the width of barriers, the number of barriers and the strength of barriers. In addition, super-Poissonian shot noise emerges as the coupling increases.
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