论文标题
Majoraana签名通过拓扑超导双岛系统负责运输
Majorana signatures in charge transport through a topological superconducting double-island system
论文作者
论文摘要
我们研究了一个电荷量子盘的动力学，该电荷量子量子组由两个主持Majorana零模式的库仑开块岛组成。 Qubit的频率是通过两个岛之间的相干单电子隧道来确定的，该岛屿源自两个位于连接处的两个Majorana零模式的杂交。我们通过双岛设备与普通金属导线相结合，计算了连续的隧道电流$ i $。我们证明，$ i \！ - \！v $在大偏置方案中的特征可以用作对相干majorena耦合$ e_m $的测量。我们提出了用于测量$ e_m $的直流和交流传输实验，并讨论了由于固有的脱位机制（例如激发的准粒子）而引起的局限性。
We investigate the dynamics of a charge qubit consisting of two Coulomb-blockaded islands hosting Majorana zero modes. The frequency of the qubit is determined by coherent single-electron tunneling between two islands originating from the hybridization of two Majorana zero modes localized at the junction. We calculate the sequential tunneling current $I$ through the double-island device coupled to normal metal leads. We demonstrate that the $I\!-\!V$ characteristics in the large-bias regime can be used as a measurement of the coherent Majorana coupling $E_M$. We propose dc and ac transport experiments for measuring $E_M$, and discuss their limitations due to intrinsic dephasing mechanisms such as excited quasiparticles.
