We consider a serial double quantum dots coupled to the ends of two topological superconducting quantum wires hosting Majorana bound states. We compute the explicit transmission property and differential conductance by the nonequilibrium Green's function method. The transmission property shows different lead-polarization line with the variable dot Majorana coupling and phase threading on the system. It is also shown that the Fano line of the differential conductance is observed with the changing dot Majorana coupling and phase of the system. However, the spin polarization does not affect its Fano characteristic of the differential conductance. It is believed that the results can help to better understand the properties of Majorana bound states and their interplay with quantum dots.

我们考虑一个串联的双量子点，该双量子点耦合到承载马里亚纳约束态的两条拓扑超导量子线的末端。我们通过非平衡格林函数法计算显式传输特性和差分电导。传输特性显示系统上的可变点Majorana耦合和相位穿线的不同引线-极化线。还表明，随着点马约拉那耦合和系统相位的变化，观察到电导的法诺线。但是，自旋极化不会影响其微分电导的Fano特性。据信，该结果可以帮助更好地理解马约拉纳结合态的性质及其与量子点的相互作用。