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arXiv · 1809.00784

Quantum charge pumping through Majorana bound states

Krashna Mohan Tripathi·Sumathi Rao·Sourin Das
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Abstract

We study adiabatic charge pumping through a Majorana bound state tunnel coupled to multiple normal leads. We show that for most of the parameters such a pump does not lead to any net pumped charge between the various leads unless a multiply connected geometry is implemented. We introduce an Aharonov-Bohm ring geometry at the junction to implement such a multiply connected geometry. We further show that the Fourier transform of the pumped charge with respect to flux inserted through the ring shows a clear distinction between the case of an Andreev bound state and the Majorana bound state. Hence such a Fourier analysis can serve as a diagnostic for the detection of Majorana bound states in the proposed geometry.

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Krashna Mohan Tripathi, Sumathi Rao, Sourin Das. 2018-09-04. Quantum charge pumping through Majorana bound states. https://doi.org/10.1103/physrevb.99.085435

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