Manipulating Edge Majorana Fermions in Vortex State

Details Manipulating Edge Majorana Fermions in Vortex State Manipulating Edge Majorana Fermions in Vortex State

2011-12-28

arxiv.org/abs/1112.6109v1

Physics

Condensed Matter

Superconductivity

7 pages, 6 figures

Scientific paper

A vortex in a model spinless px+ipy superconductor induces two Majorana fermions (MFs), one in the core and the other at the sample edge. In the present work, we show that edge MF can be generated, fused, transported, and braided easily by tuning gate voltages at point-like constriction junctions. Solving the time-dependent Bogoliubov-de Gennes equation, we demonstrate that the braiding of edge MFs obeys the non-Abelian statistics. The present setup is therefore a promising implementation for topological quantum computation, and has the advantage of easy manipulation and simple device structure.

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