Majorana modes in a triple-terminal Josephson junction with embedded parallel-coupled double quantum dots Academic Article uri icon

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abstract

  • We investigate the Josephson effect in one triple-terminal junction with embedded parallel-coupled double quantum dots. It is found that the inter-superconductor supercurrent has opportunities to oscillate in $4\pi$ period, with the adjustment of the phase differences among the superconductors. What is notable is that such a result is robust and independent of fermion parities, intradot Coulomb strength, and the dot-superconductor coupling manner. By introducing the concept of spinful many-particle Majorana modes, we present the analytical definition of the Majorana operator via superposing electron and hole operators. It can be believed that this work provide a simple but feasible proposal for the realization of Majorana modes in a nonmagnetic system.

authors

  • Yi, Guang-Yu
  • Wang, Xiao-Qi
  • Gao, Zhen
  • Wu, Hai-Na
  • Gong, Wei-Jiang

publication date

  • September 2016