Institut für Theoretische Physik, Universität Leipzig, D-04103 Leipzig, Germany.
Phys Rev Lett. 2013 Jul 19;111(3):036802. doi: 10.1103/PhysRevLett.111.036802. Epub 2013 Jul 18.
We study charge transport through a topological superconductor with a pair of Majorana end states coupled to leads via quantum dots with resonant levels. The nonlocality of the Majorana bound states opens the possibility of crossed Andreev reflection with nonlocal shot noise due to the injection of an electron into one end of the superconductor followed by the emission of a hole at the other end. In the space of energies of the two resonant quantum dot levels, we find a four peaked cloverlike pattern for the strength of noise due to crossed Andreev reflection, distinct from the single ellipsoidal peak found in the absence of Majorana bound states.
我们研究了通过拓扑超导体的电荷输运，该超导体的一对马约拉纳端态通过具有共振能级的量子点与引线耦合。马约拉纳束缚态的非局域性使得由于在超导材料的一端注入一个电子，然后在另一端发射一个空穴，交叉安德烈夫反射和非局域的散粒噪声成为可能。在两个共振量子点能级的能量空间中，我们发现由于交叉安德烈夫反射引起的噪声强度呈现出四叶形的三叶草图案，与不存在马约拉纳束缚态时发现的单个椭圆形峰值明显不同。
