Talk Title: Robustness of Majorana Fermion induced Fractional Josephson Effect It is shown in previous works that the coupling between two Majorana end states in single channel superconducting quantum wires leads to fractional Josephson effect. The experimental observation of fractional Josephson effect would be strong evidence of the existence of Majorana fermions. However, in realistic experimental conditions, multiple bands of the wires are occupied and the Majorana end states are accompanied by other fermionic end states. This raises the question concerning the robustness of fractionalJosephson effect in these situations. In this talk, I will show that the absence of the avoided energy crossing which gives rise to the fractional Josephson effect is robust, even when the Majorana fermions are coupled with arbitrary strengths to other fermions. Click to download: Presentation File |