Interferometry through a Quantum Dot Coupled to Majorana Fermions
Interferometry through a Quantum Dot Coupled to Majorana Fermions
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通过与马约拉纳费米子耦合的量子点进行干涉测量
DOI：
10.1016/j.phpro.2014.09.045
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Akiko Ueda and Takehito Yokoyama
中科院分区：
文献类型：
--
作者：
Z. Rashidian;F. M. Mojarabian;P. Bayati;G. Rashedi;A. Ueda and T. Yokoyama;Akiko Ueda and Takehito Yokoyama
我们研究了Aharonov-Bohm干涉仪的输运性质，该干涉仪在拓扑超导体的末端嵌入了一个Majorana束缚态的量子点。微分电导由凯尔德什-格林函数公式计算。最大值为2e2/h的对称型Fano共振是偏置电压的函数。我们发现，当量子点的能量固定为Majorana束缚态的能量时，电导随磁通穿透干涉仪而产生的Aharonov-Bohm位相呈现π周期，这与超导铅的情况不同。
We investigate transport properties of an Aharonov-Bohm interferometer with an embedded quantum dot with Majorana bound states at the end of the topological superconductor. The differential conductance is calculated by the Keldysh Green function formalism. The Fano resonance of the symmetric shape with the maximum value of 2e2/h emerges as a function of the bias voltage. We find that when the energy of the quantum dot is fixed to the energy of the Majorana bound state, the conductance shows π periodicity as a function of the Aharonov-Bohm phase induced by the magnetic flux penetrating the interferometer which differs from the case of the superconducting lead.